Fix repeated words.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

TODO

@@ -8,7 +8,7 @@
 
 * ostree-commit: multithreaded/async (basically compute sha256 in parallel)
   - Also speed up devino cache by having a big mmappable file that maps from
-    (device, inode) -> checksum.  We need to keep the cache up to to date;
+    (device, inode) -> checksum.  We need to keep the cache up to date;
     investigate something like http://www.sqlite.org/wal.html for having
     a shared file.
 

src/libostree/ostree-lzma-compressor.c

@@ -34,7 +34,7 @@ enum {
  * SECTION:ostree-lzma-compressor
  * @short_description: LZMA compressor
  *
- * An an implementation of #GConverter that compresses data using
+ * An implementation of #GConverter that compresses data using
  * LZMA.
  */