fix typo

Author: cmaglie

RFCs/0002-pluggable-discovery.md

@@ -362,7 +362,7 @@ Let's see how this looks into a `package_index.json` example:
 
 In this case we are adding an hypotetical `ble-discovery` version `1.0.0` to the toolset of the vendor `arduino`. From now on, we can uniquely refer to this discovery with the pair `PACKAGER` and `DISCOVERY_NAME`, in this case `arduino` and `ble-discovery` respectively.
 
-The compressed archive of the discovery must contain only a single executable file (the discovey itself) inside a single root folder. This is mandatory since the CLI will run this file automatically when the discovery is started.
+The compressed archive of the discovery must contain only a single executable file (the discovery itself) inside a single root folder. This is mandatory since the CLI will run this file automatically when the discovery is started.
 
 #### Discovery tools integration