Clarify API behavior when older versions are called.
Clarify API behavior when older versions are called.

Signed-off-by: fonglh <924e2f7b6e6840480fc2b0ef2a84490bfef287d4@gmail.com>
(cherry picked from commit f62e24f697dd5c69e58f3b5d732fd5a962a0c8e6)
Signed-off-by: Tibor Vass <3f1326dff4d85ad4ec938fb33f64575ace96db26@docker.com>

shin-/docker.github.io,stainboy/docker,rillig/docker.github.io,BSWANG/denverdino.github.io,Shopify/docker,denverdino/denverdino.github.io,docker-zh/docker.github.io,medallia/docker,thaJeztah/docker.github.io,bdwill/docker.github.io,bdwill/docker.github.io,thaJeztah/docker.github.io,bdwill/docker.github.io,sanscontext/docker.github.io,LuisBosquez/docker.github.io,anweiss/docker.github.io,johnstep/docker.github.io,shin-/docker.github.io,joeuo/docker.github.io,menglingwei/denverdino.github.io,medallia/docker,jzwlqx/denverdino.github.io,Shopify/docker,docker-zh/docker.github.io,jzwlqx/denverdino.github.io,docker/docker.github.io,shubheksha/docker.github.io,Shopify/docker,LuisBosquez/docker.github.io,joaofnfernandes/docker.github.io,danix800/docker.github.io,troy0820/docker.github.io,denverdino/denverdino.github.io,BSWANG/denverdino.github.io,danix800/docker.github.io,rillig/docker.github.io,alexisbellido/docker.github.io,denverdino/docker.github.io,menglingwei/denverdino.github.io,denverdino/denverdino.github.io,londoncalling/docker.github.io,docker/docker.github.io,shubheksha/docker.github.io,docker-zh/docker.github.io,docker/docker.github.io,alexisbellido/docker.github.io,johnstep/docker.github.io,rillig/docker.github.io,bdwill/docker.github.io,joaofnfernandes/docker.github.io,alexisbellido/docker.github.io,joeuo/docker.github.io,sanscontext/docker.github.io,gdevillele/docker.github.io,stainboy/docker,menglingwei/denverdino.github.io,LuisBosquez/docker.github.io,shin-/docker.github.io,troy0820/docker.github.io,phiroict/docker,shubheksha/docker.github.io,danix800/docker.github.io,joaofnfernandes/docker.github.io,JimGalasyn/docker.github.io,denverdino/docker.github.io,phiroict/docker,londoncalling/docker.github.io,joeuo/docker.github.io,shin-/docker.github.io,stainboy/docker,joaofnfernandes/docker.github.io,jzwlqx/denverdino.github.io,BSWANG/denverdino.github.io,joeuo/docker.github.io,docker-zh/docker.github.io,sanscontext/docker.github.io,phiroict/docker,rillig/docker.github.io,aduermael/docker.github.io,joaofnfernandes/docker.github.io,menglingwei/denverdino.github.io,anweiss/docker.github.io,JimGalasyn/docker.github.io,londoncalling/docker.github.io,joeuo/docker.github.io,anweiss/docker.github.io,gdevillele/docker.github.io,londoncalling/docker.github.io,medallia/docker,troy0820/docker.github.io,shin-/docker.github.io,JimGalasyn/docker.github.io,jzwlqx/denverdino.github.io,BSWANG/denverdino.github.io,JimGalasyn/docker.github.io,sanscontext/docker.github.io,denverdino/denverdino.github.io,thaJeztah/docker.github.io,BSWANG/denverdino.github.io,alexisbellido/docker.github.io,gdevillele/docker.github.io,denverdino/docker.github.io,danix800/docker.github.io,johnstep/docker.github.io,denverdino/docker.github.io,alexisbellido/docker.github.io,anweiss/docker.github.io,gdevillele/docker.github.io,menglingwei/denverdino.github.io,anweiss/docker.github.io,johnstep/docker.github.io,londoncalling/docker.github.io,sanscontext/docker.github.io,gdevillele/docker.github.io,bdwill/docker.github.io,johnstep/docker.github.io,JimGalasyn/docker.github.io,shubheksha/docker.github.io,docker/docker.github.io,shubheksha/docker.github.io,phiroict/docker,phiroict/docker,aduermael/docker.github.io,LuisBosquez/docker.github.io,jzwlqx/denverdino.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,aduermael/docker.github.io,medallia/docker,denverdino/denverdino.github.io,troy0820/docker.github.io,denverdino/docker.github.io,docker/docker.github.io,docker-zh/docker.github.io,LuisBosquez/docker.github.io,aduermael/docker.github.io