[PATCH v2] docs: clarify git rm --cached function in gitignore note

From: Sohom <sohom.datta@learner.manipal.edu>

Explain to users that the step to untrack a file will not also keep it untracked in the future.

Signed-off-by: Sohom Datta <sohom.datta@learner.manipal.edu>
---
    docs: Clarify git rm --cached function in gitignore note
    
    Added text explaining that the git rm --cached command isn't analogous
    to the gitignore file and that the file will need to be added to
    gitignore to prevent later commits from adding the file back.

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-862%2Fsohomdatta1%2Fgitignore-note-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-862/sohomdatta1/gitignore-note-v2
Pull-Request: https://github.com/git/git/pull/862

Range-diff vs v1:

 1:  053e9f99c9e ! 1:  c3257398c8f docs: clarify git rm --cached function in gitignore note
     @@ Metadata
       ## Commit message ##
          docs: clarify git rm --cached function in gitignore note
      
     -    Added text explaining that the git rm --cached command
     -    isn't analogous to the gitignore file and that the file
     -    will need to be added to gitignore to prevent later
     -    commits from adding the file back.
     +    Explain to users that the step to untrack a file will not also keep it
     +    untracked in the future.
      
          Signed-off-by: Sohom Datta <sohom.datta@learner.manipal.edu>
      
     @@ Documentation/gitignore.txt: The purpose of gitignore files is to ensure that ce
      +can then be added to the `gitignore` file to stop the file from
      +being reintroduced in later commits.
       
     - EXAMPLES
     - --------
     + Git does not follow symbolic links when accessing a `.gitignore` file in
     + the working tree. This keeps behavior consistent when the file is

 Documentation/gitignore.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)