[gnome-builder] doc: add section for snippet docs

[Christian Hergert <chergert src gnome org>]

commit fc4b7a51b9b2597e357ad0aad66bae7769f8a836
Author: Christian Hergert <chergert redhat com>
Date:   Sun Nov 5 16:02:45 2017 -0800

    doc: add section for snippet docs

 src/libide/snippets/ide-source-snippet.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/src/libide/snippets/ide-source-snippet.c b/src/libide/snippets/ide-source-snippet.c
index 92097e7..0232705 100644
--- a/src/libide/snippets/ide-source-snippet.c
+++ b/src/libide/snippets/ide-source-snippet.c
@@ -29,6 +29,15 @@
 #include "snippets/ide-source-snippet-chunk.h"
 #include "snippets/ide-source-snippet-context.h"
 
+/**
+ * SECTION:ide-source-snippet
+ * @title: IdeSourceSnippet
+ * @short_description: A snippet to be inserted into a file
+ *
+ * The #IdeSourceSnippet represents a single snippet that may be inserted
+ * into the #IdeSourceView.
+ */
+
 #define TAG_SNIPPET_TAB_STOP "snippet::tab-stop"
 
 struct _IdeSourceSnippet