chore: Update .editorconfig

.editorconfig

@@ -3,12 +3,16 @@
 # top-most EditorConfig file
 root = true
 
-# Unix-style newlines with a newline ending every file
 [*]
+charset = utf-8
 end_of_line = lf
 insert_final_newline = true
 indent_style = tab
+trim_trailing_whitespace = true
 
-[{*.json,*.yml}]
-indent_style = space
+[*.{md,yml}]
 indent_size = 2
+indent_style = space
+
+[*.md]
+trim_trailing_whitespace = false