fixed typo

Author: Kathy Czeck

examples/README.md

@@ -5,7 +5,7 @@ Each example file demonstrates one of the capabilities of the Rosette Platform.
 Here are some methods for running the examples.  Each example will also accept an optional `--url` parameter for
 overriding the default URL.
 
-A note on pre-requisites.  Rosette API only supports TLS 1.2 so ensure your toolchain also supports it.
+A note on prerequisites.  Rosette API only supports TLS 1.2 so ensure your toolchain also supports it.
 
 #### Virtualenv/Latest Release
 ```