Update readme

Author: emodric

README.md

@@ -13,7 +13,7 @@ Netgen Admin UI requires a fully functional eZ Publish Community 2014.12 (Netgen
 eZ Publish 5 or eZ Platform with Legacy Bridge so make sure you have it installed and fully
 configured before installing Netgen Admin UI.
 
-Developed by Netgen with the help of our [SUPPORTERS](doc/SUPPORTERS.md).
+Developed by Netgen with the help of our [supporters](doc/SUPPORTERS.md).
 
 Install instructions
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