fmt: fix formating a file in an oscillating manner (fix #22223, fix #22026) (#22232)

vlib/flag/README.md

@@ -210,4 +210,4 @@ fn main() {
 	println('an_int: ${an_int} | a_bool: ${a_bool} | a_float: ${a_float} | a_string: "${a_string}" ')
 	println(additional_args.join_lines())
 }
-```
+```

vlib/flag/flag_to.v

@@ -340,7 +340,7 @@ pub fn to_doc[T](dc DocConfig) !string {
 			delimiter: dc.delimiter
 			style:     dc.style
 		}
-		input: []
+		input:  []
 	}
 	fm.si = fm.get_struct_info[T]()!
 	return fm.to_doc(dc)!

vlib/flag/flag_to_doc_test.v

@@ -176,20 +176,20 @@ fn test_flag_to_doc_spacing_and_new_lines() {
 	assert flag.to_doc[DocTest](
 		description: 'Flag to doc test.
 Content here'
-		footer: '
+		footer:      '
 Footer content'
-		fields: unsafe { field_docs }
+		fields:      unsafe { field_docs }
 	)! == doc4
 
 	// Test in compact mode also
 	assert flag.to_doc[DocTest](
-		options: flag.DocOptions{
+		options:     flag.DocOptions{
 			compact: true
 		}
 		description: 'Flag to doc test.
 Content here'
-		footer: '
+		footer:      '
 Footer content'
-		fields: unsafe { field_docs }
+		fields:      unsafe { field_docs }
 	)! == doc5
 }