gallium/docs: Fix a couple ReST errors.

src/gallium/docs/source/context.rst

@@ -50,6 +50,7 @@ Non-CSO State
 These pieces of state are too small, variable, and/or trivial to have CSO
 objects. They all follow simple, one-method binding calls, e.g.
 ``set_blend_color``.
+
 * ``set_stencil_ref`` sets the stencil front and back reference values
   which are used as comparison values in stencil test.
 * ``set_blend_color``

src/gallium/docs/source/cso/velems.rst

@@ -1,4 +1,4 @@
-.. _vertex,elements
+.. _vertexelements:
 
 Vertex Elements
 ===============