[gjs] build: Fix distcheck

[Philip Chimento <pchimento src gnome org>]

commit 2ef67864e8a7b0423753eb2ec44adb468f6cf778
Author: Philip Chimento <philip endlessm com>
Date:   Tue Aug 8 01:00:28 2017 +0200

    build: Fix distcheck
    
    A deleted docs file was still left in the Makefile. At the same time, add
    Hacking.md to the makefile so that it is distributed.
    
    Unreviewed.

 Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 246e2d5..38d0406 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -155,7 +155,7 @@ EXTRA_DIST +=                                       \
        COPYING.LGPL                            \
        doc/ByteArray.md                        \
        doc/cairo.md                            \
-       doc/Class_Framework.md                  \
+       doc/Hacking.md                          \
        doc/SpiderMonkey_Memory.md              \
        doc/Style_Guide.md                      \
        win32/build-rules-msvc.mak              \