Fix typo in cluster/swarm/cluster.go
Fix typo in cluster/swarm/cluster.go

Signed-off-by: NanXiao <11e623a37e87cf7995c466723ec99688d55cae8c@chinadtrace.org>

shubheksha/docker.github.io,danix800/docker.github.io,docker-zh/docker.github.io,menglingwei/denverdino.github.io,ezrasilvera/swarm,shin-/docker.github.io,thaJeztah/docker.github.io,allencloud/swarm,JimGalasyn/docker.github.io,anweiss/docker.github.io,menglingwei/denverdino.github.io,bdwill/docker.github.io,docker-zh/docker.github.io,thaJeztah/docker.github.io,bdwill/docker.github.io,joaofnfernandes/docker.github.io,johnstep/docker.github.io,troy0820/docker.github.io,aduermael/docker.github.io,BSWANG/denverdino.github.io,LukasBacigal/swarm,JimGalasyn/docker.github.io,shin-/docker.github.io,menglingwei/denverdino.github.io,joeuo/docker.github.io,johnstep/docker.github.io,LuisBosquez/docker.github.io,docker/docker.github.io,shubheksha/docker.github.io,denverdino/denverdino.github.io,thaJeztah/docker.github.io,alexisbellido/docker.github.io,shin-/docker.github.io,shin-/docker.github.io,shubheksha/docker.github.io,BSWANG/denverdino.github.io,LuisBosquez/docker.github.io,thaJeztah/docker.github.io,fugr/swarm,jzwlqx/denverdino.github.io,londoncalling/docker.github.io,gdevillele/docker.github.io,joaofnfernandes/docker.github.io,shin-/docker.github.io,bdwill/docker.github.io,alexisbellido/docker.github.io,aduermael/docker.github.io,joeuo/docker.github.io,alexisbellido/docker.github.io,joaofnfernandes/docker.github.io,sanscontext/docker.github.io,jimmycmh/swarm,johnstep/docker.github.io,rillig/docker.github.io,denverdino/docker.github.io,gdevillele/docker.github.io,danix800/docker.github.io,sanscontext/docker.github.io,joaofnfernandes/docker.github.io,rchicoli/swarm,doronp/swarm,swarm-hooks/swarm,docker-zh/docker.github.io,troy0820/docker.github.io,denverdino/denverdino.github.io,jzwlqx/denverdino.github.io,anweiss/docker.github.io,phiroict/docker,bdwill/docker.github.io,shubheksha/docker.github.io,phiroict/docker,denverdino/docker.github.io,anweiss/docker.github.io,BSWANG/denverdino.github.io,rillig/docker.github.io,denverdino/docker.github.io,joaofnfernandes/docker.github.io,JimGalasyn/docker.github.io,londoncalling/docker.github.io,danix800/docker.github.io,LuisBosquez/docker.github.io,docker/docker.github.io,gdevillele/docker.github.io,danix800/docker.github.io,docker-zh/docker.github.io,jzwlqx/denverdino.github.io,allencloud/swarm,sanscontext/docker.github.io,swarm-hooks/swarm,docker/docker.github.io,liubin/swarm,sfsmithcha/swarm,aduermael/docker.github.io,alexisbellido/docker.github.io,sfsmithcha/swarm,londoncalling/docker.github.io,LuisBosquez/docker.github.io,docker/docker.github.io,johnstep/docker.github.io,denverdino/docker.github.io,gdevillele/docker.github.io,jzwlqx/denverdino.github.io,londoncalling/docker.github.io,sanscontext/docker.github.io,rillig/docker.github.io,anweiss/docker.github.io,johnstep/docker.github.io,JimGalasyn/docker.github.io,aduermael/docker.github.io,joeuo/docker.github.io,rillig/docker.github.io,LukasBacigal/swarm,LuisBosquez/docker.github.io,fugr/swarm,londoncalling/docker.github.io,denverdino/denverdino.github.io,docker-zh/docker.github.io,phiroict/docker,BSWANG/denverdino.github.io,jzwlqx/denverdino.github.io,phiroict/docker,thaJeztah/docker.github.io,phiroict/docker,ezrasilvera/swarm,JimGalasyn/docker.github.io,anweiss/docker.github.io,liubin/swarm,bdwill/docker.github.io,shubheksha/docker.github.io,alexisbellido/docker.github.io,troy0820/docker.github.io,jimmycmh/swarm,BSWANG/denverdino.github.io,menglingwei/denverdino.github.io,docker/docker.github.io,menglingwei/denverdino.github.io,troy0820/docker.github.io,joeuo/docker.github.io,rchicoli/swarm,doronp/swarm,denverdino/denverdino.github.io,denverdino/docker.github.io,gdevillele/docker.github.io,sanscontext/docker.github.io,joeuo/docker.github.io,denverdino/denverdino.github.io