Ratpack: Release note and typo fix

Author: JLLeitschuh

java/change-notes/2021-05-11-ratpack-support.md

@@ -0,0 +1,2 @@
+lgtm,codescanning
+* Add support for [Ratpack](https://ratpack.io/) HTTP framework.

java/ql/src/semmle/code/java/frameworks/ratpack/RatpackExec.qll

@@ -31,8 +31,8 @@ abstract private class FluentLambdaMethod extends Method {
   predicate doesReturnTaint(int arg) { none() }
 }
 
-private class RatpackPromiseProviderethod extends Method, FluentLambdaMethod {
-  RatpackPromiseProviderethod() { isStatic() and hasName(["flatten", "sync"]) }
+private class RatpackPromiseProviderMethod extends Method, FluentLambdaMethod {
+  RatpackPromiseProviderMethod() { isStatic() and hasName(["flatten", "sync"]) }
 
   override predicate consumesTaint(int methodArg, int lambdaArg) { none() }