fix @Rule type annotation parse function error.

fix @RequestMapping parse tree error.

src/ZM/Annotation/Swoole/SwooleEventAt.php

@@ -41,7 +41,7 @@ class SwooleEventAt extends AnnotationBase implements Rule, Level
     /**
      * @param string $type
      */
-    public function setType(string $type): void {
+    public function setType(string $type) {
         $this->type = $type;
     }
 
@@ -55,7 +55,7 @@ class SwooleEventAt extends AnnotationBase implements Rule, Level
     /**
      * @param string $rule
      */
-    public function setRule(string $rule): void {
+    public function setRule(string $rule) {
         $this->rule = $rule;
     }
 
@@ -69,7 +69,7 @@ class SwooleEventAt extends AnnotationBase implements Rule, Level
     /**
      * @param int $level
      */
-    public function setLevel(int $level): void {
+    public function setLevel(int $level) {
         $this->level = $level;
     }