Fix typo in the prompt string

Author: BoykoAlex

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/java/rewrite/RewriteRecipeRepository.java

@@ -439,7 +439,7 @@ private CompletableFuture<WorkspaceEdit> askForPreview(WorkspaceEdit workspaceEd
 				final MessageActionItem applyChanges = new MessageActionItem("Apply");
 				ShowMessageRequestParams messageParams = new ShowMessageRequestParams();
 				messageParams.setType(MessageType.Info);
-				messageParams.setMessage("Do you want to preview chnages before applying or apply right away?");
+				messageParams.setMessage("Do you want to preview changes before applying or apply right away?");
 				messageParams.setActions(List.of(applyChanges, previewChanges));
 				return server.getClient().showMessageRequest(messageParams).thenApply(previewChanges::equals);
 			} else {