Fix .editorconfig-kotlinglang (#299)

Summary:
`ktfmt` with the `--kotlinlang-style` option actually uses a continuation indent size of 4, but the editorconfig provided in this incorrectly configures a continuation indent of 8.

Pull Request resolved: #299

Reviewed By: strulovich

Differential Revision: D34890733

Pulled By: cgrushko

fbshipit-source-id: d020a35b9e3c82b201e27282e484974d30b56579

docs/editorconfig/.editorconfig-kotlinlang

@@ -11,7 +11,7 @@ indent_style = space
 insert_final_newline = true
 max_line_length = 100
 indent_size = 4
-ij_continuation_indent_size = 8
+ij_continuation_indent_size = 4
 ij_java_names_count_to_use_import_on_demand = 9999
 ij_kotlin_align_in_columns_case_branch = false
 ij_kotlin_align_multiline_binary_operation = false