Switch from a manual label to using the automatic title-based one

docs/source/reference/modding/settings/shaders.rst

@@ -1,8 +1,6 @@
 Shaders Settings
 ################
 
-.. _force-shaders-label:
-
 force shaders
 -------------
 

docs/source/reference/modding/settings/shadows.rst

@@ -13,7 +13,7 @@ enable shadows
 
 Enable or disable the rendering of shadows.
 Unlike in the original Morrowind engine, 'Shadow Mapping' is used, which can have a performance impact, but has more realistic results.
-Bear in mind that this will force OpenMW to use shaders as if :ref:`force-shaders-label` was enabled.
+Bear in mind that this will force OpenMW to use shaders as if :ref:`force shaders` was enabled.
 A keen developer may be able to implement compatibility with fixed-function mode using the advice of `this post <https://github.com/OpenMW/openmw/pull/1547#issuecomment-369657381>`_, but it may be more difficult than it seems.