Remove duplicated "is a"

Signed-off-by: João Britto <jabcalves@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

João Britto committed May 6, 2011 at 01:16 UTC 4c007ae8351a0a2beba57e2930ed21aed141e51e
1 file changed +1 -1
Documentation/diff-options.txt
+1 -1
@@ -243,7 +243,7 @@ ifdef::git-log[]
243 For following files across renames while traversing history, see
244 `--follow`.
245 endif::git-log[]
246 - If `n` is specified, it is a is a threshold on the similarity
246 + If `n` is specified, it is a threshold on the similarity
247 index (i.e. amount of addition/deletions compared to the
248 file's size). For example, `-M90%` means git should consider a
249 delete/add pair to be a rename if more than 90% of the file