Update README.rst

Author: pantsmanuk

README.rst

@@ -48,7 +48,7 @@ Requirements
 Known to work building configurations
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1. Linux (Ubuntu / Debian etc)
-2. OS X -  `See this tread for information <https://github.com/guysoft/OctoPi/issues/388#issuecomment-316327106>`_
+2. OS X -  `See this thread for information <https://github.com/guysoft/OctoPi/issues/388#issuecomment-316327106>`_
 
 
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