Update README.md

Fixed spacing in README

Author: lmammino

README.md

@@ -59,7 +59,7 @@ This fastify plugin adds 2 utility decorators to your fastify instance:
     - `access_token`
     - `refresh_token` (optional, only if the `offline scope` was originally requested)
     - `token_type` (generally `'bearer'`)
-    -  `expires_in` (number of seconds for the token to expire, e.g. `240000`)
+    - `expires_in` (number of seconds for the token to expire, e.g. `240000`)
   - `getNewAccessTokenUsingRefreshToken(refreshToken, params, callback)`: A function that takes a refresh token and retrieves a new *token response* object. This is generally useful with background processing workers to re-issue a new token when the original token has expired. The `params` argument is optional and it's an object that can be used to pass in extra parameters to the refresh request (e.g. a stricter set of scopes). If the callback is not passed this function will return a promise. The object resulting from the callback call or the promise resolution is a new *token response* object (see fields above).
 
 ## License