Fix editor config's indentation. (valkey-io#950)

The `Prettier` formatter takes its config from this file, and since there's no default indentation, it resets its indentation to 2 spaces.
This change fixes the issue by adding default indentation to all languages.

.editorconfig

@@ -5,6 +5,8 @@ root = true
 trim_trailing_whitespace = true
 insert_final_newline = true
 indent_style = space
+indent_size = 4
+tab_width = 4
 
 # Xml files
 [*.xml]
@@ -16,8 +18,6 @@ indent_size = 2
 #### Core EditorConfig Options ####
 
 # Indentation and spacing
-indent_size = 4
-tab_width = 4
 
 # New line preferences
 end_of_line = lf