docs: Fix speaker2 Hat docs.

Signed-off-by: lbuque <[email protected]>

Author: lbuque

docs/en/hats/speaker2.rst

@@ -56,7 +56,7 @@ Example output:
 Speaker2
 ^^^^^^^^^
 
-.. autoclass:: unit.speaker2.Speaker2
+.. autoclass:: hat.speaker2.Speaker2Hat
     :members:
 
     Speaker2 class inherits Speaker class, See :ref:`hardware.Speaker.Methods <hardware.Speaker.Methods>` for more details.

docs/en/refs/hat.speaker2.ref

@@ -8,11 +8,11 @@
 
 .. |example.png| image:: https://static-cdn.m5stack.com/mpy_docs/hat/speaker2/example.png
 
-.. |stickc_plus2_speaker_example.m5f2| raw:: html
+.. |speaker2_stickcplus2_example.m5f2| raw:: html
 
     <a
         href="https://uiflow2.m5stack.com/?example=https://raw.githubusercontent.com/m5stack/uiflow-micropython/develop/examples/hat/speaker2/speaker2_stickcplus2_example.m5f2"
         target="_blank"
     >
-        stickc_plus2_speaker_example.m5f2
+        speaker2_stickcplus2_example.m5f2
     </a>