docs: put a space between // and comment text

[alexandear]

The PR formats comments by putting a space between // and comment text. This is found with the help of gocritic's commentFormatting check.

Details

❯ golangci-lint run
test/fields/fields.go:52:3: commentFormatting: put a space between `//` and comment text (gocritic)
                //{"rate_limit", &github.RateLimits{}},
                ^
github/event_types.go:757:2: commentFormatting: put a space between `//` and comment text (gocritic)
        //"added", "edited", "removed".
        ^
github/event_types_test.go:9884:6: commentFormatting: put a space between `//` and comment text (gocritic)
                                        //Creating just one object with all the possible rules for testing
                                        ^
❯ golangci-lint run
test/fields/fields.go:52:3: commentFormatting: put a space between `//` and comment text (gocritic)
                //{"rate_limit", &github.RateLimits{}},
                ^
github/event_types.go:757:2: commentFormatting: put a space between `//` and comment text (gocritic)
        //"added", "edited", "removed".
        ^
github/event_types_test.go:9884:6: commentFormatting: put a space between `//` and comment text (gocritic)
                                        //Creating just one object with all the possible rules for testing
                                        ^
github/event_types_test.go:10038:6: commentFormatting: put a space between `//` and comment text (gocritic)
                                        //Creating just one object with all the possible rules for testing
                                        ^
github/github_test.go:2368:2: commentFormatting: put a space between `//` and comment text (gocritic)
        //dont panic if request is nil
        ^
github/github_test.go:2375:2: commentFormatting: put a space between `//` and comment text (gocritic)
        //dont panic if response is nil
        ^

[alexandear]

Removed as this has been commented for 11 years.

[gmlewis]

Thank you, @alexandear !
LGTM.
Merging.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 93.01%. Comparing base (2b8c7fa) to head (47c57ef).
Report is 156 commits behind head on master.

Files with missing lines	Patch %	Lines
example/newfilewithappauth/main.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3329      +/-   ##
==========================================
- Coverage   97.72%   93.01%   -4.71%     
==========================================
  Files         153      172      +19     
  Lines       13390    14848    +1458     
==========================================
+ Hits        13085    13811     +726     
- Misses        215      944     +729     
- Partials       90       93       +3     

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