fix: update Dispatch main branch (#154)

README.md

@@ -19,7 +19,7 @@ There may need to be modifications to the included example config files (`.env`)
 
 ## Data
 
-By default Dispatch does not come with any data. If you're looking for some example data, please use the postgres dump file located [here](https://github.com/Netflix/dispatch/blob/master/data/dispatch-sample-data.dump) to load example data.
+By default Dispatch does not come with any data. If you're looking for some example data, please use the postgres dump file located [here](https://github.com/Netflix/dispatch/blob/main/data/dispatch-sample-data.dump) to load example data.
 
 Note: when running the `install.sh` file, you will be asked whether to load this database dump, or to initialize a new database.