[libgit2-glib] docs: add missing commit get_nth_ancestor method

[Ignacio Casal Quinteiro <icq src gnome org>]

commit c4fc58f17e103a7cca51da57dae14726dd31394b
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Mon Apr 1 11:11:24 2013 +0200

    docs: add missing commit get_nth_ancestor method

 docs/reference/libgit2-glib-1.0-sections.txt |    1 +
 libgit2-glib/ggit-commit.c                   |    6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/docs/reference/libgit2-glib-1.0-sections.txt b/docs/reference/libgit2-glib-1.0-sections.txt
index 82a367e..95f4c5d 100644
--- a/docs/reference/libgit2-glib-1.0-sections.txt
+++ b/docs/reference/libgit2-glib-1.0-sections.txt
@@ -82,6 +82,7 @@ ggit_commit_parents_get
 ggit_commit_parents_get_id
 ggit_commit_get_tree
 ggit_commit_get_tree_id
+ggit_commit_get_nth_ancestor
 <SUBSECTION Standard>
 GGIT_COMMIT
 GGIT_COMMIT_CLASS
diff --git a/libgit2-glib/ggit-commit.c b/libgit2-glib/ggit-commit.c
index 11e3e88..8d479cf 100644
--- a/libgit2-glib/ggit-commit.c
+++ b/libgit2-glib/ggit-commit.c
@@ -453,11 +453,11 @@ ggit_commit_get_tree_id (GgitCommit *commit)
 
 /**
  * ggit_commit_get_nth_ancestor:
- * @commit: a #GgitCommit
- * @n: the requested ancestor
+ * @commit: a #GgitCommit.
+ * @n: the requested ancestor.
  * @error: a #GError for error reporting, or %NULL.
  *
- * Gets the commit object that is the <n>th generation ancestor
+ * Gets the commit object that is the n-th generation ancestor
  * of the named commit object, following only the first parents.
  * Passing %0 to the @n parameter returns another instance of @commit.
  *