Fix some words in readme

README.md

@@ -13,10 +13,10 @@ A future version may work in less hacky ways to support more OS versions.
 ## Usage
 Put the binary on a Mac and run it (`./mac-registration-provider`), optionally with some parameters:
 
-* Relay (default) - connect to a websocket and return validation data when the server requests it.
+* Relay (default) - connect to a websocket and return registration data when the server requests it.
   * `-relay-server` Use a different relay server (defaults to `https://registration-relay.beeper.com`).
-* Submit - periodically generate validation data and push it to a server.
+* Submit - periodically generate registration data and push it to a server.
   * The list of addresses to submit to must be provided as arguments after the flags.
   * `-submit-interval` - The interval to submit data at (required).
   * `-submit-token` - A bearer token to include when submitting data (defaults to no auth).
-* `-once` - generate a single validation data, print it to stdout and exit
+* `-once` - generate a single registration data, print it to stdout and exit