doc: fix repeated words

Inspired by 21416f0a07 ("restore: fix typo in docs", 2019-08-03), I ran
"git grep -E '(\b[a-zA-Z]+) \1\b' -- Documentation/" to find other cases
where words were duplicated, e.g. "the the", and in most cases removed
one of the repeated words.

There were many false positives by this grep command, including
deliberate repeated words like "really really" or valid uses of "that
that" which I left alone, of course.

I also did not correct any of the legitimate, accidentally repeated
words in old RelNotes.

Signed-off-by: Mark Rushakoff <mark.rushakoff@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/Documentation/technical/hash-function-transition.txt b/Documentation/technical/hash-function-transition.txt
index bc2ace2..2ae8fa4 100644
--- a/Documentation/technical/hash-function-transition.txt
+++ b/Documentation/technical/hash-function-transition.txt
@@ -456,7 +456,7 @@ packfile marked as UNREACHABLE_GARBAGE (using the PSRC field; see
 below). To avoid the race when writing new objects referring to an
 about-to-be-deleted object, code paths that write new objects will
 need to copy any objects from UNREACHABLE_GARBAGE packs that they
-refer to to new, non-UNREACHABLE_GARBAGE packs (or loose objects).
+refer to new, non-UNREACHABLE_GARBAGE packs (or loose objects).
 UNREACHABLE_GARBAGE are then safe to delete if their creation time (as
 indicated by the file's mtime) is long enough ago.