chore: updated release notes and removed manual dispatch of github action

Author: ghorsey

.github/workflows/main.yml

@@ -15,7 +15,7 @@ on:
     - '.vscode'
 
   # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
+  # workflow_dispatch:
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:

src/OpenGraphNet/OpenGraphNet.csproj

@@ -20,7 +20,7 @@
 		<Copyright>Copyright © 2016-2021</Copyright>
 		<PackageLicenseExpression>MIT</PackageLicenseExpression>
 		<PackageProjectUrl>http://ghorsey.github.io/OpenGraph-Net</PackageProjectUrl>
-		<PackageReleaseNotes>Removed non-async methods.  Updated Package to .net 6 and removed older framework support.  Use version 3 for older support.</PackageReleaseNotes>
+		<PackageReleaseNotes>Added back NetStandard 2.1.</PackageReleaseNotes>
 		<PackageTags>OpenGraph</PackageTags>
 		<MinVerTagPrefix>v</MinVerTagPrefix>
 		<PackageTags>OpenGraph  OGP Parser</PackageTags>