Fixes typo

Author: anselmbradford

README.md

@@ -38,7 +38,7 @@ Other things to include:
 
 Describe any dependencies that must be installed for this software to work. 
 This includes programming languages, databases or other storage mechanisms, build tools, frameworks, and so forth.
-If specific versions of other software are required, or or known not to work, call that out.
+If specific versions of other software are required, or known not to work, call that out.
 
 ## Installation