contrib: fix typos

Fix typos via codespell.

Signed-off-by: Andrew Kreimer <algonell@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/completion/git-completion.bash

@@ -3296,7 +3296,7 @@ __gitcomp_directories ()
 		#       i.e. which are *already* part of their
 		#       sparse-checkout.  Thus, normal file and directory
 		#       completion is always useless for "git
-		#       sparse-checkout add" and is also probelmatic for
+		#       sparse-checkout add" and is also problematic for
 		#       "git sparse-checkout set" unless using it to
 		#       strictly narrow the checkout.
 		COMPREPLY=( "" )
@@ -3698,7 +3698,7 @@ _git_worktree ()
 		# Here we are not completing an --option, it's either the
 		# path or a ref.
 		case "$prev" in
-		-b|-B)	# Complete refs for branch to be created/reseted.
+		-b|-B)	# Complete refs for branch to be created/reset.
 			__git_complete_refs
 			;;
 		-*)	# The previous word is an -o|--option without an

contrib/subtree/git-subtree.sh

@@ -946,7 +946,7 @@ cmd_split () {
 		rev=$(git rev-parse -q --verify "$1^{commit}") ||
 			die "fatal: '$1' does not refer to a commit"
 	else
-		die "fatal: you must provide exactly one revision, and optionnally a repository.  Got: '$*'"
+		die "fatal: you must provide exactly one revision, and optionally a repository.  Got: '$*'"
 	fi
 	repository=""
 	if test "$#" = 2

contrib/subtree/t/t7900-subtree.sh

@@ -47,7 +47,7 @@ last_commit_subject () {
 # pre-2.32.0 versions of 'git subtree' would write the hash of the tag
 # (sub1 below), instead of the commit (sub1^{commit}) in the
 # "git-subtree-split" trailer.
-# We immitate this behaviour below using a replace ref.
+# We imitate this behaviour below using a replace ref.
 # This function creates 3 repositories:
 # - $1
 # - $1-sub (added as subtree "sub" in $1)