move from branch to from in the README file

Author: sebsto

README.md

@@ -38,9 +38,9 @@ To expose your OpenAPI implementation as an AWS Lambda function:
     .package(url: "https://github.com/apple/swift-openapi-runtime.git", from: "1.0.0"),
 
     // add these three dependencies
-    .package(url: "https://github.com/swift-server/swift-aws-lambda-runtime.git", branch: "1.0.0-alpha.1"),
-    .package(url: "https://github.com/swift-server/swift-aws-lambda-events.git", branch: "main"),
-    .package(url: "https://github.com/sebsto/swift-openapi-lambda", branch: "main") 
+    .package(url: "https://github.com/swift-server/swift-aws-lambda-runtime.git", from: "1.0.0-alpha.1"),
+    .package(url: "https://github.com/swift-server/swift-aws-lambda-events.git", from: "0.1.0"),
+    .package(url: "https://github.com/sebsto/swift-openapi-lambda", from: "0.1.1")
   ],
 ```
 
@@ -203,9 +203,9 @@ let package = Package(
   dependencies: [
     .package(url: "https://github.com/apple/swift-openapi-generator.git", from: "1.0.0"),
     .package(url: "https://github.com/apple/swift-openapi-runtime.git", from: "1.0.0"),
-    .package(url: "https://github.com/swift-server/swift-aws-lambda-runtime.git", branch: "1.0.0-alpha.1"),
-    .package(url: "https://github.com/swift-server/swift-aws-lambda-events.git", branch: "main"),
-    .package(url: "https://github.com/sebsto/swift-openapi-lambda", branch: "main") 
+    .package(url: "https://github.com/swift-server/swift-aws-lambda-runtime.git", from: "1.0.0-alpha.1"),
+    .package(url: "https://github.com/swift-server/swift-aws-lambda-events.git", from: "0.1.0"),
+    .package(url: "https://github.com/sebsto/swift-openapi-lambda", from: "0.1.1") 
   ],
   targets: [
     .executableTarget(