fix: emojis in titles not working correctly and update (#1016)

the doc(add a note)

docs/helpers.md

@@ -2,6 +2,8 @@
 
 docsify extends Markdown syntax to make your documents more readable.
 
+> Note:  For the special code syntax cases, you'd better put them within a code backticks to avoid any conflicting from configurations or emojis. 
+
 ## important content
 
 Important content like:

src/core/render/compiler.js

@@ -21,9 +21,12 @@ export function getAndRemoveConfig(str = '') {
     str = str
       .replace(/^'/, '')
       .replace(/'$/, '')
-      .replace(/(?:^|\s):([\w-]+)=?([\w-]+)?/g, (m, key, value) => {
-        config[key] = (value && value.replace(/"/g, '')) || true
-        return ''
+      .replace(/(?:^|\s):([\w-]+:?)=?([\w-]+)?/g, (m, key, value) => {
+        if(key.indexOf(':') === -1){
+          config[key] = (value && value.replace(/"/g, '')) || true
+          return ''
+        }
+        return m
       })
       .trim()
   }