feat(docs): migrate from .md to .rst (#4129)

examples/styles/index.rst

@@ -1,96 +1,96 @@
 
 Size styles
-"""""""""""""""""""
+-----------
 
 .. lv_example:: styles/lv_example_style_1
   :language: c
 
 Background styles
-"""""""""""""""""""
+-----------------
 
 .. lv_example:: styles/lv_example_style_2
   :language: c
 
 Border styles
-""""""""""""""""
+-------------
 
 .. lv_example:: styles/lv_example_style_3
   :language: c
 
 Outline styles
-""""""""""""""""
+--------------
 
 .. lv_example:: styles/lv_example_style_4
   :language: c
 
 Shadow styles
-""""""""""""""""""""""""
+-------------
 
 .. lv_example:: styles/lv_example_style_5
   :language: c
 
 Image styles
-""""""""""""""""""""""""
+------------
 
 .. lv_example:: styles/lv_example_style_6
   :language: c
 
 Arc styles
-""""""""""""""""""""""""
+----------
 
-.. lv_example:: style/lv_example_style_7
+.. lv_example:: styles/lv_example_style_7
   :language: c
 
 Text styles
-""""""""""""""""""""""""
+-----------
 
 .. lv_example:: styles/lv_example_style_8
   :language: c
 
 Line styles
-""""""""""""""""""""""""
+-----------
 
 .. lv_example:: styles/lv_example_style_9
   :language: c
 
 
 Transition
-""""""""""""""""""""""""
+----------
 
 .. lv_example:: styles/lv_example_style_10
   :language: c
 
 
 Using multiple styles
-""""""""""""""""""""""""
+---------------------
 
 .. lv_example:: styles/lv_example_style_11
   :language: c
 
 
 Local styles
-""""""""""""""""""""""""
+------------
 
 .. lv_example:: styles/lv_example_style_12
   :language: c
 
 
 Add styles to parts and states
-"""""""""""""""""""""""""""""""
+------------------------------
 
 .. lv_example:: styles/lv_example_style_13
   :language: c
 
 
 Extending the current theme
-""""""""""""""""""""""""""""""""""
+---------------------------
 
 .. lv_example:: styles/lv_example_style_14
   :language: c
 
 
 Opacity and Transformations
-""""""""""""""""""""""""""""""""""
+---------------------------
 
 .. lv_example:: styles/lv_example_style_15
   :language: c