chore: readme

Author: Leeeon233

Package.swift

@@ -20,7 +20,8 @@ let package = Package(
     name: "Loro",
     platforms: [
         .iOS(.v13),
-        .macOS(.v10_15)
+        .macOS(.v10_15),
+        .visionOS(.v1)
     ],
     products: [
         // Products define the executables and libraries a package produces, making them visible to other packages.

README.md

@@ -36,7 +36,7 @@ let package = Package(
     products: [......],
     dependencies:[
         ...,
-        .package(url: "https://github.com/loro-dev/loro-swift.git", from: "0.16.2")
+        .package(url: "https://github.com/loro-dev/loro-swift.git", from: "0.16.2-alpha.0")
     ],
     targets:[
         .executableTarget(