docs: fix extra newline in swarm label addition
docs: fix extra newline in swarm label addition

Signed-off-by: Anil Madhavapeddy <3a02579c191f8558e3fedece867419cb15398b26@docker.com>

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