minor typo in documentation - surplus 'a'

minor typo in documentation - surplus 'a'

[René Genz]

Dear sir or madam,

I noticed a minor typo in `man 1 git-commit`.
There are two consecutive 'a'. At:
https://github.com/git/git/blob/maint/Documentation/git-commit.txt#L97
you can read:
---8<---
--reset-author::
	When used with -C/-c/--amend options, or when committing after a
a conflicting ...
---8<---

Please, remove one 'a'.



I searched the code for another occurrence with:
git-maint$ for F in $(find . -type f); do grep -o "a_[[:space:]]a" <(paste -sd_ $F) | tr -d '_' ; done
a	a
a	a

One is in Documentation.
The other is from a test file, no change needed there:
https://github.com/git/git/blob/maint/t/t3904-stash-patch.sh#L94


Thank you in advance.
Have fun.
-- 
Kind regards,
René