[deep_sleep] Update possible modes for esp32_ext1_wakeup (esphome#5391)

* Update deep_sleep.md

* Clarify modes per variant

* Clean up

---------

Co-authored-by: Jonathan Swoboda <[email protected]>

Author: 2 people

content/components/deep_sleep.md

@@ -67,8 +67,10 @@ Advanced features:
   wake up on multiple pins. This cannot be used together with wakeup pin.
 
   - **pins** (**Required**, list of pin numbers): The pins to wake up on.
-  - **mode** (**Required**): The mode to use for the wakeup source. Must be one of `ALL_LOW` (wake up when
-    all pins go LOW) or `ANY_HIGH` (wake up when any pin goes HIGH).
+  - **mode** (**Required**): The mode to use for the wakeup source. Must be one of:
+    - `ANY_LOW`: wake up when any selected pin is LOW (ESP32‑S2/S3/C6/H2 only)
+    - `ALL_LOW`: wake up when all selected pins are LOW (ESP32 only)
+    - `ANY_HIGH`: wake up when any selected pin is HIGH
 
 {{< note >}}
 Only one deep sleep component may be configured.