docs: Update lora module doc.

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

Author: icyqwq

docs/en/module/lora.rst

@@ -32,7 +32,8 @@ Micropython Example::
 
 UIFLOW2 Example:
 
-    |example.svg|
+    |example_tx.svg|
+    |example_rx.svg|
 
 .. only:: builder_html
 

docs/en/refs/module.lora.ref

@@ -13,5 +13,6 @@
 .. |sleep.svg| image:: https://static-cdn.m5stack.com/mpy_docs/module/lora/sleep.svg
 .. |irq_triggered.svg| image:: https://static-cdn.m5stack.com/mpy_docs/module/lora/irq_triggered.svg
 
-.. |example.svg| image:: https://static-cdn.m5stack.com/mpy_docs/module/lora/example.svg
+.. |example_tx.svg| image:: https://static-cdn.m5stack.com/mpy_docs/module/lora/example_tx.svg
+.. |example_rx.svg| image:: https://static-cdn.m5stack.com/mpy_docs/module/lora/example._rxsvg