fluksio run takes inputs after -- as name=value

So an input named like a flag of run, timeout or sync, can still be set.
Flags before -- keep naming inputs as they did.

docs/code/cli.md

@@ -190,6 +190,13 @@ Syncs local code, then submits a run. Flags such as `--lr` name the flow's
 declared inputs and are converted to their declared types. Unknown inputs are
 rejected. Use `--param name=a,b` with `sweep` for multiple values.
 
+Everything after `--` is an input written as `name=value`. Use it for an input
+that shares its name with a flag of `run`, such as `timeout`:
+
+```sh
+fluksio run train --wait --timeout 600 -- timeout=30 lr=0.05
+```
+
 After the first sync, `run` imports the module that declared the flow. If no
 declaration is recorded, it searches the working directory and skips paths
 covered by `.gitignore`. Import errors in that fallback search produce