C-Lightning-Modifications.md

 hsmd_wire.csv:
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 * We add new HSMD messages:
-  - `hsmd_new_channel`
-  - `hsmd_ready_channel`
+  - [`hsmd_new_channel` / `hsmd_ready_channel`](https://github.com/ElementsProject/lightning/pull/4949) **merged**
   - `hsmd_validate_commitment_tx`
-  - `hsmd_validate_revocation`
+  - [`hsmd_validate_revocation`](https://github.com/ElementsProject/lightning/pull/4898) **merged**
 * We add fields to existing HSMD messages:
   - `hsmd_sign_commitment_tx`, `hsmd_sign_remote_commitment_tx`:
     * `commit_num`