Update deprecation comments

Author: rbuckton

src/deprecatedCompat/4.8/mergeDecoratorsAndModifiers.ts

@@ -6,21 +6,21 @@
 namespace ts {
     export interface Node {
         /**
-         * @deprecated `decorators` has been merged with `modifiers` on the declarations that support decorators.
-         * To test whether a `Node` can legally have decorators, use the `ts.canHaveDecorators()` function. To read the
-         * decorators of a `Node` that can legally have decorators, use the `ts.getDecorators()` function.
+         * @deprecated `decorators` has been removed from `Node` and merged with `modifiers` on the `Node` subtypes that support them.
+         * Use `ts.canHaveDecorators()` to test whether a `Node` subtype can have decorators.
+         * Use `ts.getDecorators()` to get the decorators of a `Node` subtype.
          *
          * For example:
          * ```ts
          * const decorators = ts.canHaveDecorators(node) ? ts.getDecorators(node) : undefined;
          * ```
          */
-        readonly decorators: never;
+        readonly decorators?: undefined;
 
         /**
-         * @deprecated `modifiers` has been removed from `Node` and moved to the specific `Node` subtypes that support them.
-         * To test whether a `Node` can legally have modifiers, use the `ts.canHaveModifiers()` function. To read the modifiers
-         * of a `Node` that can legally have modifiers, use the `ts.getModifiers()` function.
+         * @deprecated `modifiers` has been removed from `Node` and moved to the `Node` subtypes that support them.
+         * Use `ts.canHaveModifiers()` to test whether a `Node` subtype can have modifiers.
+         * Use `ts.getModifiers()` to get the modifiers of a `Node` subtype.
          *
          * For example:
          * ```ts
@@ -212,7 +212,6 @@ namespace ts {
          * @deprecated Decorators are no longer supported for this function. Callers should use an overload that does not accept a `decorators` parameter.
          */
         updateExportDeclaration(node: ExportDeclaration, decorators: readonly Decorator[] | undefined, modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier: Expression | undefined, assertClause: AssertClause | undefined): ExportDeclaration;
-
     }
 
     const MUST_MERGE: DeprecationOptions = { since: "4.8", warnAfter: "4.9.0-0", message: "Decorators have been combined with modifiers. Callers should switch to an overload that does not accept a 'decorators' parameter." };