fix image content error

content/posts/built-simply-faas.mdx

@@ -349,7 +349,7 @@ app.listen(3000);
 
 <Image
   src="/images/p/built-simply-faas/用户通过HTTP触发函数的流程.svg"
-  placeholder="用户通过HTTP触发函数的流程"
+  alt="用户通过HTTP触发函数的流程"
   priority
   width="307"
   height="346"
@@ -398,7 +398,7 @@ FaaS 并不只是简单的拥有动态的执行函数的能力就可以了，面
 
 <Image
   src="/images/p/built-simply-faas/通过进程池管理子进程.svg"
-  placeholder="通过进程池管理子进程"
+  alt="通过进程池管理子进程"
   priority
   width="407"
   height="346"
@@ -578,7 +578,7 @@ export default app.listen(OPTION.port);
 
 <Image
   src="/images/p/built-simply-faas/book.jpg"
-  placeholder="book"
+  alt="book"
   priority
   width="392"
   height="500"

content/posts/my-develop-environmental.mdx

@@ -10,7 +10,6 @@ tags: [Linux, Server]
   src={'/images/p/my-develop-environmental/logo.svg'}
   width="1400"
   height="787"
-  placeholder=""
   priority
 />