bump version

Author: zhgchgli0718

README.md

@@ -48,14 +48,14 @@ The chart above shows the elapsed time (in seconds) to render different HTML str
 
 - File > Swift Packages > Add Package Dependency
 - Add `https://github.com/ZhgChgLi/ZMarkupParser.git`
-- Select "Up to Next Major" with "1.8.0"
+- Select "Up to Next Major" with "1.8.1"
 
 or 
 
 ```swift
 ...
 dependencies: [
-  .package(url: "https://github.com/ZhgChgLi/ZMarkupParser.git", from: "1.8.0"),
+  .package(url: "https://github.com/ZhgChgLi/ZMarkupParser.git", from: "1.8.1"),
 ]
 ...
 .target(