Fix broken definitions file (#6343)

Author: BrennanConroy

eng/PatchConfig.props

@@ -27,6 +27,7 @@ Later on, this will be checked using this condition:
   </PropertyGroup>
   <PropertyGroup Condition=" '$(VersionPrefix)' == '2.2.2' ">
     <PackagesInPatch>
+      @aspnet/signalr;
     </PackagesInPatch>
   </PropertyGroup>
 

src/SignalR/clients/ts/signalr-protocol-msgpack/src/MessagePackHubProtocol.ts

@@ -27,7 +27,7 @@ export class MessagePackHubProtocol implements IHubProtocol {
 
     /** Creates an array of HubMessage objects from the specified serialized representation.
      *
-     * @param {ArrayBuffer | Buffer} input An ArrayBuffer containing the serialized representation.
+     * @param {ArrayBuffer | Buffer} input An ArrayBuffer or Buffer containing the serialized representation.
      * @param {ILogger} logger A logger that will be used to log messages that occur during parsing.
      */
     public parseMessages(input: ArrayBuffer | Buffer, logger: ILogger): HubMessage[] {

src/SignalR/clients/ts/signalr/src/IHubProtocol.ts

@@ -150,10 +150,10 @@ export interface IHubProtocol {
      *
      * If {@link @aspnet/signalr.IHubProtocol.transferFormat} is 'Text', the `input` parameter must be a string, otherwise it must be an ArrayBuffer.
      *
-     * @param {string | ArrayBuffer} input A string, or ArrayBuffer containing the serialized representation.
+     * @param {string | ArrayBuffer | Buffer} input A string, ArrayBuffer, or Buffer containing the serialized representation.
      * @param {ILogger} logger A logger that will be used to log messages that occur during parsing.
      */
-    parseMessages(input: string | ArrayBuffer, logger: ILogger): HubMessage[];
+    parseMessages(input: string | ArrayBuffer | Buffer, logger: ILogger): HubMessage[];
 
     /** Writes the specified {@link @aspnet/signalr.HubMessage} to a string or ArrayBuffer and returns it.
      *