Fix URL syntax error

README.rst

@@ -163,7 +163,7 @@ Tips
 Mode Line Feedback
 ------------------
 
-Rigpa comes with many modes -- View mode, Window mode, Buffer mode, Line mode, and more. To keep track of which mode you're in at any time, it's useful to have visual feedback in the form of a color-coded mode indicator in your mode line, with colors that are different enough to give you a clue at a glance whether you're in the right mode. Rigpa currently defines and maintains Evil states corresponding to every Rigpa mode in order to benefit from existing Emacs tools that have already been written to track your Evil state. So you can use any of these existing plugins for this purpose, including powerline and `telephone-line <https://github.com/dbordak/telephone-line>`_. For example, you could use `this config for telephone-line <https://github.com/countvajhula/.emacs.d/blob/95b43a92cabf7719875f1f937b4c3de093d32a24/my-init/application-environment.el#L437-L522`__ to ensure the different modes have distinct and useful colors.
+Rigpa comes with many modes -- View mode, Window mode, Buffer mode, Line mode, and more. To keep track of which mode you're in at any time, it's useful to have visual feedback in the form of a color-coded mode indicator in your mode line, with colors that are different enough to give you a clue at a glance whether you're in the right mode. Rigpa currently defines and maintains Evil states corresponding to every Rigpa mode in order to benefit from existing Emacs tools that have already been written to track your Evil state. So you can use any of these existing plugins for this purpose, including powerline and `telephone-line <https://github.com/dbordak/telephone-line>`_. For example, you could use `this config for telephone-line <https://github.com/countvajhula/.emacs.d/blob/95b43a92cabf7719875f1f937b4c3de093d32a24/my-init/application-environment.el#L437-L522>`__ to ensure the different modes have distinct and useful colors.
 
 "License"
 ==========