[folks] build: Fix documentation build for the dummy backend

[Philip Withnall <pwithnall src gnome org>]

commit 24695ce215dcc5a9945b6d4c8eca5909e2ef554a
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Fri Mar 14 12:37:01 2014 +0000

    build: Fix documentation build for the dummy backend
    
    This was inadvertently broken by commit
    77d39108cc912ab3926357b5dedbe19e0a3f921a. Whoops.

 docs/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/docs/Makefile.am b/docs/Makefile.am
index efe547e..61b0af2 100644
--- a/docs/Makefile.am
+++ b/docs/Makefile.am
@@ -126,6 +126,7 @@ folks_dummy_doc_deps = \
        gee-0.8 \
        folks \
        folks-internal \
+       folks-generics \
        $(NULL)
 valadoc_flags_folks_dummy = \
        $(valadoc_flags) \