typofixes: fix misspelt comments

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/git-bisect.sh b/git-bisect.sh
index 9f064b6..73b4c14 100755
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -137,7 +137,7 @@
 			# cogito usage, and cogito users should understand
 			# it relates to cg-seek.
 			[ -s "$GIT_DIR/head-name" ] &&
-				die "$(gettext "won't bisect on seeked tree")"
+				die "$(gettext "won't bisect on cg-seek'ed tree")"
 			start_head="${head#refs/heads/}"
 			;;
 		*)