Fix #2178 - add go get lint to contributing guide
Fix #2178 - add go get lint to contributing guide

Signed-off-by: Jean-Laurent de Morlhon <b39fc94b663d6be34c4c0f177d2094ce0e8da3b3@morlhon.net>

denverdino/denverdino.github.io,docker/docker.github.io,Herbis/machine,joeuo/docker.github.io,shubheksha/docker.github.io,robvanmieghem/machine,tpires/machine,StackPointCloud/machine,robertbreker/machine,cvstebut/machine,xiaohui/machine,johnstep/docker.github.io,xiaohui/machine,BSWANG/denverdino.github.io,JimGalasyn/docker.github.io,kacole2/machine,sanscontext/docker.github.io,jzwlqx/denverdino.github.io,denverdino/denverdino.github.io,londoncalling/docker.github.io,shubheksha/docker.github.io,soleo/machine,allingeek/machine,tpires/machine,exoscale/docker-machine,kacole2/machine,LuisBosquez/docker.github.io,joaofnfernandes/docker.github.io,jeanlaurent/machine,joeuo/docker.github.io,jeanlaurent/machine,jsirois/machine,voutilad/machine,jeffellin/machine,docker/docker.github.io,xinxian0458/machine,soleo/machine,otherjason/machine,ubiquityhosting/machine,aduermael/docker.github.io,troy0820/docker.github.io,skatsuta/machine,jgsqware/machine,tyrken/machine,voutilad/machine,anweiss/docker.github.io,kunalkushwaha/machine,errordeveloper/machine,aduermael/docker.github.io,LuisBosquez/docker.github.io,moxiegirl/machine,xiaohui/machine,faijaz/docker-machine,docker/machine,rillig/docker.github.io,ubiquityhosting/machine,trecloux/machine,menglingwei/denverdino.github.io,sebadiaz/machine,sanscontext/docker.github.io,ppadala/machine,flavio/machine,xinxian0458/machine,johnstep/docker.github.io,docker-zh/docker.github.io,wzymaster/machine,JimGalasyn/docker.github.io,shubheksha/docker.github.io,BSWANG/denverdino.github.io,denverdino/denverdino.github.io,pottava/machine,JohnKDay/machine,StackPointCloud/machine,phiroict/docker,menglingwei/machine,ksasi/machine,allingeek/machine,docker/machine,ksasi/machine,usmanismail/machine,phiroict/docker,gdevillele/docker.github.io,denverdino/docker.github.io,denverdino/docker.github.io,Herbis/machine,tyrken/machine,tpires/machine,sanscontext/docker.github.io,otherjason/machine,wzymaster/machine,menglingwei/denverdino.github.io,StackPointCloud/machine,robvanmieghem/machine,robertbreker/machine,joaofnfernandes/docker.github.io,alexisbellido/docker.github.io,jsirois/machine,larsla/machine,jsirois/machine,danix800/docker.github.io,errordeveloper/machine,phiroict/docker,jeffellin/machine,LuisBosquez/docker.github.io,LuisBosquez/docker.github.io,denverdino/docker.github.io,bdwill/docker.github.io,gdevillele/docker.github.io,ibuildthecloud/machine,sanscontext/docker.github.io,bgokden/machine,jzwlqx/denverdino.github.io,rowancarr/machine,docker-zh/docker.github.io,bdwill/docker.github.io,zchee/machine,cvstebut/machine,londoncalling/docker.github.io,danix800/docker.github.io,jeanlaurent/machine,docker-zh/docker.github.io,dgageot/machine,LuisBosquez/docker.github.io,londoncalling/docker.github.io,juliengarcia/machine,JohnKDay/machine,trecloux/machine,denverdino/denverdino.github.io,thaJeztah/machine,jmelis/machine,JimGalasyn/docker.github.io,johnstep/docker.github.io,troy0820/docker.github.io,skatsuta/machine,faijaz/docker-machine,menglingwei/machine,faijaz/docker-machine,joaofnfernandes/docker.github.io,SvenDowideit/machine,troy0820/docker.github.io,thaJeztah/docker.github.io,rillig/docker.github.io,rillig/docker.github.io,denverdino/machine,joaofnfernandes/docker.github.io,sanscontext/docker.github.io,bdwill/docker.github.io,gdevillele/docker.github.io,shin-/docker.github.io,miqui/machine,joeuo/docker.github.io,SvenDowideit/machine,docker/docker.github.io,juliengarcia/machine,londoncalling/machine,otherjason/machine,joeuo/docker.github.io,jzwlqx/denverdino.github.io,londoncalling/machine,anweiss/docker.github.io,askb/machine,BSWANG/denverdino.github.io,pottava/machine,anweiss/docker.github.io,moxiegirl/machine,danix800/docker.github.io,menglingwei/machine,phiroict/docker,allingeek/machine,denverdino/docker.github.io,bgokden/machine,phiroict/docker,johnstep/docker.github.io,menglingwei/denverdino.github.io,rowancarr/machine,larsla/machine,dweomer/docker-machine,shin-/docker.github.io,menglingwei/denverdino.github.io,johnstep/docker.github.io,zchee/machine,thaJeztah/machine,robertbreker/machine,trecloux/machine,JohnKDay/machine,ppadala/machine,usmanismail/machine,miqui/machine,rowancarr/machine,tyrken/machine,denverdino/machine,thaJeztah/machine,shin-/docker.github.io,usmanismail/machine,docker-zh/docker.github.io,denverdino/docker.github.io,thaJeztah/docker.github.io,rillig/docker.github.io,alexisbellido/docker.github.io,alexisbellido/docker.github.io,aduermael/docker.github.io,cvstebut/machine,BSWANG/denverdino.github.io,londoncalling/docker.github.io,soleo/machine,shubheksha/docker.github.io,gdevillele/docker.github.io,jgsqware/machine,ksasi/machine,shubheksha/docker.github.io,ppadala/machine,askb/machine,flavio/machine,askb/machine,errordeveloper/machine,jgsqware/machine,jmelis/machine,exoscale/docker-machine,bdwill/docker.github.io,docker-zh/docker.github.io,xinxian0458/machine,kacole2/machine,docker/docker.github.io,thaJeztah/docker.github.io,JimGalasyn/docker.github.io,ibuildthecloud/machine,skatsuta/machine,moxiegirl/machine,miqui/machine,pottava/machine,denverdino/denverdino.github.io,dweomer/docker-machine,troy0820/docker.github.io,jeffellin/machine,shin-/docker.github.io,wzymaster/machine,jmelis/machine,joeuo/docker.github.io,bdwill/docker.github.io,joaofnfernandes/docker.github.io,bgokden/machine,alexisbellido/docker.github.io,denverdino/machine,JimGalasyn/docker.github.io,dgageot/machine,menglingwei/denverdino.github.io,robvanmieghem/machine,anweiss/docker.github.io,sebadiaz/machine,sebadiaz/machine,alexisbellido/docker.github.io,zchee/machine,thaJeztah/docker.github.io,kunalkushwaha/machine,jzwlqx/denverdino.github.io,anweiss/docker.github.io,juliengarcia/machine,jzwlqx/denverdino.github.io,shin-/docker.github.io,docker/docker.github.io,gdevillele/docker.github.io,londoncalling/docker.github.io,thaJeztah/docker.github.io,aduermael/docker.github.io,danix800/docker.github.io,kunalkushwaha/machine,ubiquityhosting/machine,BSWANG/denverdino.github.io