fix(typo): typo and commentaries

Co-authored-by: Lucas Saavedra Vaz <[email protected]>

Author: SuGlider

docs/en/api/rmt.rst

@@ -14,7 +14,7 @@ Example
 
 To get started with RMT, you can try:
 
-RMT Write Neo Pixel
+RMT Write RGB LED
 *******************
 
 .. literalinclude:: ../../../libraries/ESP32/examples/RMT/RMTWrite_RGB_LED/RMTWrite_RGB_LED.ino