make insert_final_newline = true for all files

.editorconfig

@@ -4,7 +4,7 @@ end_of_line = lf
 indent_size = 2
 ij_continuation_indent_size = 2
 indent_style = space
-insert_final_newline = false
+insert_final_newline = true
 max_line_length = 120
 tab_width = 2
 ij_formatter_off_tag = @formatter:off
@@ -353,7 +353,6 @@ ij_json_wrap_long_lines = false
 indent_size = 2
 tab_width = 2
 trim_trailing_whitespace=true
-insert_final_newline=true
 ij_continuation_indent_size = 2
 ij_ruby_align_group_field_declarations = false
 ij_ruby_align_multiline_parameters = true
@@ -541,4 +540,4 @@ ij_typescript_while_on_new_line = false
 ij_typescript_wrap_comments = false
 
 [docs/api/**/*.yml]
-trim_trailing_whitespace = false
+trim_trailing_whitespace = false