格式配置优化

Author: Eric-Lee-Handyman

.editorconfig

@@ -1,3 +1,5 @@
+root = true
+
 [*]
 charset = utf-8
 end_of_line = lf
@@ -6,6 +8,7 @@ indent_style = space
 insert_final_newline = false
 max_line_length = 100
 tab_width = 2
+trim_trailing_whitespace = true
 continuation_indent_size = 4
 
 [*.java]