[file-roller] README: Single compressed files extentions

[Paolo Bacchilega <paobac src gnome org>]

commit ba34b1145c5e8821e72742dffe21254d79370d69
Author: Sergey Ponomarev <stokito gmail com>
Date:   Sat Nov 10 15:42:06 2018 +0200

    README: Single compressed files extentions

 README | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/README b/README
index dc543551..05581298 100644
--- a/README
+++ b/README
@@ -48,8 +48,8 @@
     * ZIP Archive (.zip)
     * ZIP Archived Comic Book (.cbz)
     * ZOO Compressed Archive File (.zoo)
-    * Single files compressed with gzip, brotli, bzip, bzip2, compress, lrzip, lzip,
-      lzop, rzip, xz.
+    * Single files compressed with gzip (.gz), brotli (.br), bzip (.bz), bzip2 (.bz2), compress (.Z),
+      lrzip (.lrz), lzip (.lz), lzop (.lzo), rzip(.rz), xz (.xz).
 
 * Home Page