Fix ex_doc configuration and documentation warnings

- Add pools.md and channel.md to ex_doc extras and groups
- Fix removed function references in migration.md to avoid link warnings
- Fix internal function reference in asyncio.md

Author: benoitc

docs/asyncio.md

@@ -915,7 +915,7 @@ The `py:async_call/3,4` and `py:await/1,2` APIs use an event-driven backend base
 | Component | Role |
 |-----------|------|
 | `py_event_loop_pool` | Pool manager for event loop-based async execution |
-| `py_event_loop:run_async/2` | Submit coroutine to event loop |
+| `run_async/2` (internal) | Submit coroutine to event loop |
 | `_run_and_send` | Python wrapper that sends result via `erlang.send()` |
 | `nif_event_loop_run_async` | NIF for direct coroutine submission |
 

docs/migration.md

@@ -225,13 +225,13 @@ ok = py_context:exec(Ctx, <<"x = 42">>),
 ```
 
 **Removed functions:**
-- `py:bind/0`, `py:bind/1`
-- `py:unbind/0`, `py:unbind/1`
-- `py:is_bound/0`
-- `py:with_context/1`
-- `py:ctx_call/4,5,6`
-- `py:ctx_eval/2,3,4`
-- `py:ctx_exec/2`
+- `bind/0`, `bind/1` - process binding
+- `unbind/0`, `unbind/1` - process unbinding
+- `is_bound/0` - check if process is bound
+- `with_context/1` - scoped context execution
+- `ctx_call/4,5,6` - context-specific call
+- `ctx_eval/2,3,4` - context-specific eval
+- `ctx_exec/2` - context-specific exec
 
 ### Subprocess Support
 

rebar.config

@@ -43,6 +43,8 @@
         <<"docs/ai-integration.md">>,
         <<"docs/type-conversion.md">>,
         <<"docs/context-affinity.md">>,
+        <<"docs/pools.md">>,
+        <<"docs/channel.md">>,
         <<"docs/streaming.md">>,
         <<"docs/memory.md">>,
         <<"docs/logging.md">>,
@@ -61,6 +63,8 @@
             <<"docs/ai-integration.md">>,
             <<"docs/type-conversion.md">>,
             <<"docs/context-affinity.md">>,
+            <<"docs/pools.md">>,
+            <<"docs/channel.md">>,
             <<"docs/streaming.md">>,
             <<"docs/memory.md">>,
             <<"docs/logging.md">>