[gtksourceview] Fix the markup for NULL in the documentation

[Ignacio Casal Quinteiro <icq src gnome org>]

commit a18441bac42360c918a99a06aba654801e8073af
Author: Emmanuel Rodriguez <emmanuel rodriguez gmail com>
Date:   Fri Oct 30 19:58:32 2009 +0100

    Fix the markup for NULL in the documentation

 gtksourceview/gtksourceiter.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/gtksourceview/gtksourceiter.c b/gtksourceview/gtksourceiter.c
index 7948094..9570ccc 100644
--- a/gtksourceview/gtksourceiter.c
+++ b/gtksourceview/gtksourceiter.c
@@ -564,9 +564,9 @@ breakup_string (const char *string,
  * @iter: start of search.
  * @str: a search string.
  * @flags: flags affecting how the search is done.
- * @match_start: return location for start of match, or %%NULL.
- * @match_end: return location for end of match, or %%NULL.
- * @limit: bound for the search, or %%NULL for the end of the buffer.
+ * @match_start: return location for start of match, or %NULL.
+ * @match_end: return location for end of match, or %NULL.
+ * @limit: bound for the search, or %NULL for the end of the buffer.
  *
  * Searches forward for @str. Any match is returned by setting
  * @match_start to the first character of the match and @match_end to the
@@ -684,9 +684,9 @@ gtk_source_iter_forward_search (const GtkTextIter   *iter,
  * @iter: a #GtkTextIter where the search begins.
  * @str: search string.
  * @flags: bitmask of flags affecting the search.
- * @match_start: return location for start of match, or %%NULL.
- * @match_end: return location for end of match, or %%NULL.
- * @limit: location of last possible @match_start, or %%NULL for start of buffer.
+ * @match_start: return location for start of match, or %NULL.
+ * @match_end: return location for end of match, or %NULL.
+ * @limit: location of last possible @match_start, or %NULL for start of buffer.
  *
  * Same as gtk_text_iter_backward_search(), but supports case insensitive
  * searching.