UX: Polish messages for task type migration (#675)

Author: CsCherrYY

src/tasks/migration/CodeActionProvider.ts

@@ -8,7 +8,7 @@ import { DiagnosticProvider } from "./DiagnosticProvider";
 
 export class CodeActionProvider implements vscode.CodeActionProvider {
 
-    public static JAVA_UPDATE_DEPRECATED_TASK_TITLE = "Update deprecated task";
+    public static JAVA_UPDATE_DEPRECATED_TASK_TITLE = `Change to \"${ExportJarTaskProvider.exportJarType}\"`;
     public static JAVA_BUILD_ARTIFACT_TYPE = `"type": "${ExportJarTaskProvider.exportJarType}"`;
 
     public provideCodeActions(document: vscode.TextDocument, range: vscode.Range | vscode.Selection,

src/tasks/migration/DiagnosticProvider.ts

@@ -10,8 +10,7 @@ import { DeprecatedExportJarTaskProvider, ExportJarTaskProvider } from "../../ex
 
 export class DiagnosticProvider implements vscode.Disposable {
     public static DIAGNOSTIC_SOURCE = "Project Manager for Java";
-    public static DEPRECATED_TASK_TYPE_DECLARATION = `\"type\": \"${DeprecatedExportJarTaskProvider.type}\"`;
-    public static DEPRECATED_TASK_TYPE_MESSAGE = `Tasks with type \"${DeprecatedExportJarTaskProvider.type}\" are deprecated and will not be supported in the future, please use \"${ExportJarTaskProvider.exportJarType}\" instead.`;
+    public static DEPRECATED_TASK_TYPE_MESSAGE = `The type \"${DeprecatedExportJarTaskProvider.type}\" is deprecated, please use \"${ExportJarTaskProvider.exportJarType}\" instead.`;
     private diagnosticCollection: vscode.DiagnosticCollection;
     private disposables: vscode.Disposable[] = [];
     private refreshDiagnosticsTrigger: any;