fix(client): fix wrong attrs selector when loading head tags (close vuepress#426)

Author: meteorlxy

packages/@vuepress/client/src/composables/updateHead.ts

@@ -99,17 +99,17 @@ export const queryHeadTag = ([
   attrs,
   content = '',
 ]: HeadConfig): HTMLElement | null => {
-  const attrsSelector = Object.entries(attrs).map(([key, value]) => {
-    if (isString(value)) {
-      return `[${key}="${value}"]`
-    }
-
-    if (value === true) {
-      return `[${key}]`
-    }
-
-    return ''
-  })
+  const attrsSelector = Object.entries(attrs)
+    .map(([key, value]) => {
+      if (isString(value)) {
+        return `[${key}="${value}"]`
+      }
+      if (value === true) {
+        return `[${key}]`
+      }
+      return ''
+    })
+    .join('')
 
   const selector = `head > ${tagName}${attrsSelector}`
   const tags = Array.from(document.querySelectorAll<HTMLElement>(selector))