Miscellaneous doc fixes/enhancements

Change-Id: I915303cea787d9fb188428b98ac6cfc610cc4470
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
diff --git a/docs/user-guide.rst b/docs/user-guide.rst
index 35d44ca..db3fe15 100644
--- a/docs/user-guide.rst
+++ b/docs/user-guide.rst
@@ -575,7 +575,7 @@
    1 (do save and restore). 0 is the default. An SPD may set this to 1 if it
    wants the timer registers to be saved and restored.
 
-- ``OVERRIDE_LIBC``: This option allows platforms to override the default libc
+-  ``OVERRIDE_LIBC``: This option allows platforms to override the default libc
    for the BL image. It can be either 0 (include) or 1 (remove). The default
    value is 0.