Disabling Strategy Implementers Guide (paritytech#2955)

Closes paritytech#1961

polkadot/roadmap/implementers-guide/src/SUMMARY.md

@@ -8,6 +8,7 @@
   - [Disputes Process](protocol-disputes.md)
     - [Dispute Flow](disputes-flow.md)
   - [Chain Selection and Finalization](protocol-chain-selection.md)
+  - [Validator Disabling](protocol-validator-disabling.md)
 - [Architecture Overview](architecture.md)
   - [Messaging Overview](messaging.md)
   - [PVF Pre-checking](pvf-prechecking.md)

polkadot/roadmap/implementers-guide/src/protocol-disputes.md

@@ -8,9 +8,9 @@ All parachain blocks that end up in the finalized relay chain should be valid. T
 only backed, but not included.
 
 We have two primary components for ensuring that nothing invalid ends up in the finalized relay chain:
-  * Approval Checking, as described [here](./protocol-approval.md) and implemented according to the [Approval
-    Voting](node/approval/approval-voting.md) subsystem. This protocol can be shown to prevent invalid parachain blocks
-    from making their way into the finalized relay chain as long as the amount of attempts are limited.
+  * Approval Checking, as described [here](./protocol-approval.md) and implemented accordingly in the [Approval
+Voting](node/approval/approval-voting.md) subsystem. This protocol can be shown to prevent invalid parachain blocks
+from making their way into the finalized relay chain as long as the amount of attempts are limited.
   * Disputes, this protocol, which ensures that each attempt to include something bad is caught, and the offending
 validators are punished. Disputes differ from backing and approval process (and can not be part of those) in that a
 dispute is independent of a particular fork, while both backing and approval operate on particular forks. This