corrected description of network aliases, added real-world example per #2907
corrected description of network aliases, added real-world example per #2907

Signed-off-by: Victoria Bialas <99cd2b71a4b4f6883e7934ce9590288e2952433f@docker.com>

denverdino/denverdino.github.io,dbdd4us/compose,rillig/docker.github.io,dnephin/compose,docker-zh/docker.github.io,shubheksha/docker.github.io,londoncalling/docker.github.io,aduermael/docker.github.io,jzwlqx/denverdino.github.io,gdevillele/docker.github.io,thaJeztah/docker.github.io,sanscontext/docker.github.io,moxiegirl/compose,johnstep/docker.github.io,menglingwei/denverdino.github.io,LuisBosquez/docker.github.io,LuisBosquez/docker.github.io,LuisBosquez/docker.github.io,GM-Alex/compose,joeuo/docker.github.io,johnstep/docker.github.io,tiry/compose,denverdino/denverdino.github.io,GM-Alex/compose,alexisbellido/docker.github.io,menglingwei/denverdino.github.io,docker/docker.github.io,KalleDK/compose,michael-k/docker-compose,joaofnfernandes/docker.github.io,jzwlqx/denverdino.github.io,johnstep/docker.github.io,mdaue/compose,sanscontext/docker.github.io,aduermael/docker.github.io,joeuo/docker.github.io,thaJeztah/docker.github.io,shin-/docker.github.io,sanscontext/docker.github.io,shubheksha/docker.github.io,swoopla/compose,alexisbellido/docker.github.io,gdevillele/docker.github.io,JimGalasyn/docker.github.io,thaJeztah/docker.github.io,schmunk42/compose,londoncalling/docker.github.io,shin-/docker.github.io,shubheksha/docker.github.io,BSWANG/denverdino.github.io,menglingwei/denverdino.github.io,joeuo/docker.github.io,joaofnfernandes/docker.github.io,rillig/docker.github.io,anweiss/docker.github.io,docker-zh/docker.github.io,denverdino/docker.github.io,denverdino/denverdino.github.io,bdwill/docker.github.io,docker/docker.github.io,denverdino/compose,londoncalling/docker.github.io,thaJeztah/docker.github.io,phiroict/docker,menglingwei/denverdino.github.io,andrewgee/compose,sdurrheimer/compose,KalleDK/compose,JimGalasyn/docker.github.io,sanscontext/docker.github.io,joaofnfernandes/docker.github.io,vdemeester/compose,denverdino/denverdino.github.io,docker-zh/docker.github.io,shin-/docker.github.io,rillig/docker.github.io,joeuo/docker.github.io,londoncalling/docker.github.io,JimGalasyn/docker.github.io,shubheksha/docker.github.io,danix800/docker.github.io,gdevillele/docker.github.io,gdevillele/docker.github.io,sanscontext/docker.github.io,shin-/compose,docker/docker.github.io,thaJeztah/docker.github.io,aduermael/docker.github.io,funkyfuture/docker-compose,moxiegirl/compose,docker-zh/docker.github.io,bdwill/docker.github.io,londoncalling/docker.github.io,denverdino/denverdino.github.io,shubheksha/docker.github.io,docker/docker.github.io,bdwill/docker.github.io,LuisBosquez/docker.github.io,anweiss/docker.github.io,johnstep/docker.github.io,BSWANG/denverdino.github.io,docker-zh/docker.github.io,phiroict/docker,denverdino/docker.github.io,denverdino/docker.github.io,BSWANG/denverdino.github.io,bdwill/docker.github.io,danix800/docker.github.io,docker/docker.github.io,jzwlqx/denverdino.github.io,troy0820/docker.github.io,jzwlqx/denverdino.github.io,alexisbellido/docker.github.io,bdwill/docker.github.io,dbdd4us/compose,anweiss/docker.github.io,shin-/docker.github.io,hoogenm/compose,BSWANG/denverdino.github.io,phiroict/docker,phiroict/docker,danix800/docker.github.io,twitherspoon/compose,alexisbellido/docker.github.io,rillig/docker.github.io,sdurrheimer/compose,twitherspoon/compose,jrabbit/compose,BSWANG/denverdino.github.io,jzwlqx/denverdino.github.io,anweiss/docker.github.io,anweiss/docker.github.io,denverdino/docker.github.io,shin-/docker.github.io,JimGalasyn/docker.github.io,schmunk42/compose,aduermael/docker.github.io,troy0820/docker.github.io,troy0820/docker.github.io,joeuo/docker.github.io,andrewgee/compose,thaJeztah/compose,michael-k/docker-compose,shin-/compose,denverdino/compose,hoogenm/compose,joaofnfernandes/docker.github.io,JimGalasyn/docker.github.io,tiry/compose,danix800/docker.github.io,johnstep/docker.github.io,funkyfuture/docker-compose,joaofnfernandes/docker.github.io,denverdino/docker.github.io,vdemeester/compose,troy0820/docker.github.io,gdevillele/docker.github.io,thaJeztah/compose,menglingwei/denverdino.github.io,dnephin/compose,jrabbit/compose,mdaue/compose,alexisbellido/docker.github.io,phiroict/docker,LuisBosquez/docker.github.io,swoopla/compose