completion: complete --find-copies

Signed-off-by: Philippe Blain <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: phil-blain

contrib/completion/git-completion.bash

@@ -1740,6 +1740,7 @@ __git_diff_common_options="--stat --numstat --shortstat --summary
 			--color-moved --color-moved= --no-color-moved
 			--color-moved-ws= --no-color-moved-ws
 			--full-index --binary --abbrev --diff-filter=
+			--find-copies
 			--find-copies-harder --ignore-cr-at-eol
 			--text --ignore-space-at-eol --ignore-space-change
 			--ignore-all-space --ignore-blank-lines --exit-code