Minor tweak

Author: javiereguiluz

reference/configuration/framework.rst

@@ -963,9 +963,9 @@ every request.
 
 Here are some common examples of how ``base_uri`` merging works in practice:
 
-==========================  ==================  ==========================
+==========================  ==================  =============================
 ``base_uri``                Relative URI        Actual Requested URI
-==========================  ==================  ==========================
+==========================  ==================  =============================
 http://example.org          /bar                http://example.org/bar
 http://example.org/foo      /bar                http://example.org/bar
 http://example.org/foo      bar                 http://example.org/bar
@@ -977,7 +977,7 @@ http://example.org/api/v4   /bar                http://example.org/bar
 http://example.org/api/v4/  /bar                http://example.org/bar
 http://example.org/api/v4   bar                 http://example.org/api/bar
 http://example.org/api/v4/  bar                 http://example.org/api/v4/bar
-==========================  ==================  ==========================
+==========================  ==================  =============================
 
 bindto
 ......