rephrase slot ordering statement in Overview [skip ci]

Author: gichiba

docs/_Docs_Overview.md

@@ -54,7 +54,7 @@ For a full list of these contracts, see the "Roles and Authority" point below. A
 
 Data structures, enums, constants and events are declared in a dedicated `*DataTypes.sol` contract, e.g. `ColonyDataTypes.sol`.
 
-For clarity, all storage variables are held separately in a `*Storage.sol` contract, e.g. `ColonyStorage.sol`. Storage variable declaration ordering is crucial to be maintained; network upgrades and recovery depend on a consistent and clear storage layout. All variabes are commented with slot numbers to support developers.
+For clarity, all storage variables are held separately in a `*Storage.sol` contract, e.g. `ColonyStorage.sol`. Storage variable declaration ordering is crucial to be maintained; network upgrades and recovery will break if the ordering is altered. All variabes are commented with slot numbers to support developers.
 
 
 **Integrations**