fix assignVested notice

Pay attention, the @notice parameter of the assignVested method in the TokenManagercontract breaks theradspec` parser: there is a infinity loop.

Context: aragon/radspec#127

apps/token-manager/contracts/TokenManager.sol

@@ -134,7 +134,7 @@ contract TokenManager is ITokenController, IForwarder, AragonApp {
     }
 
     /**
-    * @notice Assign `@tokenAmount(self.token(): address, _amount, false)` tokens to `_receiver` from the Token Manager's holdings with a `_revokable : 'revokable' : ''` vesting starting at `@formatDate(_start)`, cliff at `@formatDate(_cliff)` (first portion of tokens transferable), and completed vesting at `@formatDate(_vested)` (all tokens transferable)
+    * @notice Assign `@tokenAmount(self.token(): address, _amount, false)` tokens to `_receiver` from the Token Manager's holdings with a `_revokable ? 'revokable' : ''` vesting starting at `@formatDate(_start)`, cliff at `@formatDate(_cliff)` (first portion of tokens transferable), and completed vesting at `@formatDate(_vested)` (all tokens transferable)
     * @param _receiver The address receiving the tokens, cannot be Token Manager itself
     * @param _amount Number of tokens vested
     * @param _start Date the vesting calculations start