Fix: vet false warning on brackets in documentation (#17767)

Author: ArtemkaKun

cmd/tools/vvet/tests/brackets_in_documentation_comment_no_warn.out

@@ -0,0 +1,9 @@
+
+// normalize_vector Normalizes a vector
+//
+// Example:
+// ```v
+// vector := Vector{3, 4}
+// normalize_vector(vector) // Vector{0.6, 0.8}
+// ```
+pub fn normalize_vector(vector f32) {}

cmd/tools/vvet/tests/brackets_in_documentation_comment_no_warn.vv

@@ -187,23 +187,28 @@ fn (mut vt Vet) vet_fn_documentation(lines []string, line string, lnumber int) {
 					prev_prev_line = lines[j - 1]
 				}
 				prev_line := lines[j]
+
+				if prev_line.starts_with('//') {
+					if prev_line.starts_with('// ${fn_name} ') {
+						grab = false
+						break
+					} else if prev_line.starts_with('// ${fn_name}')
+						&& !prev_prev_line.starts_with('//') {
+						grab = false
+						clean_line := line.all_before_last('{').trim(' ')
+						vt.warn('The documentation for "${clean_line}" seems incomplete.',
+							lnumber, .doc)
+						break
+					}
+
+					continue
+				}
+
 				if prev_line.contains('}') { // We've looked back to the above scope, stop here
 					break
-				} else if prev_line.starts_with('// ${fn_name} ') {
-					grab = false
-					break
-				} else if prev_line.starts_with('// ${fn_name}')
-					&& !prev_prev_line.starts_with('//') {
-					grab = false
-					clean_line := line.all_before_last('{').trim(' ')
-					vt.warn('The documentation for "${clean_line}" seems incomplete.',
-						lnumber, .doc)
-					break
 				} else if prev_line.starts_with('[') {
 					tags << collect_tags(prev_line)
 					continue
-				} else if prev_line.starts_with('//') { // Single-line comment
-					continue
 				}
 			}
 			if grab {