Remove trailing backtick
This patch is removing a trailing backtick (`) from the
api-ref/source/services.inc document.
@@ -9,7 +9,7 @@ These APIs help in interacting with the Shared File Systems services,
.. important::
- For API versions 2.6 and prior, replace ``services``` in the URLs
+ For API versions 2.6 and prior, replace ``services`` in the URLs
with ``os-services``.
