fix(rmt): includes missing reference to C5 and P4

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: SuGlider

docs/en/api/rmt.rst

@@ -421,7 +421,7 @@ RMT_SYMBOLS_PER_CHANNEL_BLOCK
 Constant defining the number of RMT symbols per memory block.
 
 * ESP32/ESP32-S2: 64 symbols per block
-* ESP32-S3/ESP32-C3/ESP32-C6/ESP32-H2: 48 symbols per block
+* ESP32-S3/ESP32-C3/ESP32-C5/ESP32-C6/ESP32-H2/ESP32-P4: 48 symbols per block
 
 **Example:**