fix grammar

Author: notchyves

README.md

@@ -3,4 +3,4 @@
 We share our Network Protocol with server partners so they can write their own Minecraft servers with their own code. This documentation compiles a series of tree diagrams that define the structure of the packets used by the Protocol, as well as related classes and enums.
 Protocol is subject to change release over release.
 
-Current Relesae - r/20_u7
+Current Release - r/20_u7