chore: A bit of docs

Author: janjakubnanista

docs/ops.md

@@ -46,6 +46,20 @@ just create-config <shortname> <path to your state file>
 
 Where  `shortname` is your chain's name (e.g. `op`) and the path to the state file points to the `state.json` file generated by `op-deployer`.
 
+> If using custom contracts, `op-deployer` version needs to be specified as the third CLI argument to the `just` command above:
+> ```
+> just create-config <shortname> <path to your state file> <op deployer version>
+> ```
+>
+> Currently supported values for the version are:
+>
+> - `op-deployer/v0.0.14`
+> - `op-deployer/v0.0.14`
+> - `op-deployer/v0.0.14`
+> - `op-deployer/v0.2.3`
+> - `op-deployer/v0.3.2`
+> - `op-deployer/v0.4.0-rc.3`
+
 This will put two files in the `.staging` directory - `<shortname>.toml` and `<shortname>.json.zst`
 
 ### 4. Update generated config