docs: add Deno.funlock[Sync]() and Deno.flock[Sync]() migration g…

…uides (denoland#311)

runtime/manual/advanced/migrate_deprecations.md

@@ -131,6 +131,31 @@ Use [`Deno.FsFile`](https://deno.land/api?s=Deno.FsFile) instead.
 
 See [deno#13661](https://github.com/denoland/deno/issues/13661) for details.
 
+### `Deno.flock()`
+
+Use [`Deno.FsFile.lock()`](https://deno.land/api?s=Deno.FsFile&p=prototype.lock)
+instead.
+
+```diff
+- await Deno.flock(file.rid);
++ await file.lock();
+```
+
+See [deno#22178](https://github.com/denoland/deno/issues/22178) for details.
+
+### `Deno.flockSync()`
+
+Use
+[`Deno.FsFile.lockSync()`](https://deno.land/api?s=Deno.FsFile&p=prototype.lockSync)
+instead.
+
+```diff
+- Deno.flockSync(file.rid);
++ file.lockSync();
+```
+
+See [deno#22178](https://github.com/denoland/deno/issues/22178) for details.
+
 ### `Deno.fstatSync()`
 
 Use
@@ -194,6 +219,32 @@ instead.
 
 See the [Deno 1.40 blog post][Deno 1.40 blog post] for details.
 
+### `Deno.funlock()`
+
+Use
+[`Deno.FsFile.unlock()`](https://deno.land/api?s=Deno.FsFile&p=prototype.unlock)
+instead.
+
+```diff
+- await Deno.funlock(file.rid);
++ await file.unlock();
+```
+
+See [deno#22178](https://github.com/denoland/deno/issues/22178) for details.
+
+### `Deno.funlockSync()`
+
+Use
+[`Deno.FsFile.unlockSync()`](https://deno.land/api?s=Deno.FsFile&p=prototype.unlockSync)
+instead.
+
+```diff
+- Deno.funlockSync(file.rid);
++ file.unlockSync();
+```
+
+See [deno#22178](https://github.com/denoland/deno/issues/22178) for details.
+
 ### `Deno.futimeSync()`
 
 Use