Fix regex for the json-file logger opts in overview.md
Fix regex for the json-file logger opts in overview.md

The regex used to describe the max-file and max-size logging options for
the json-file logger were incorrect. The regexes would only match a
single character (a digit or a literal +). Instead the regexes should
match 1 or more digits.

The character class for the units of the max-size also included a pipe
which meant that the regex would match 1| instead of only matching 1m,
1k, and 1g.

Signed-off-by: Steven Erenst <dc0c08459d7d076361e021518331c725a99067dd@gmail.com>
(cherry picked from commit e9a9015e38fc0996a3dae61393885414b092103f)
Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

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