Update readme.source.md

Author: SimonCropp

readme.source.md

@@ -313,6 +313,7 @@ Nick Chapsas (1 Aug 2022)](https://www.youtube.com/watch?v=Q1_YkcPwpqY)
  * [Verify.Quibble](https://github.com/VerifyTests/Verify.Quibble): Comparison of objects via [Quibble](https://github.com/nrkno/Quibble).
  * [Verify.QuestPDF](https://github.com/VerifyTests/Verify.QuestPDF): Verification of pdf documents via [QuestPDF](https://www.questpdf.com/).
  * [Verify.RavenDb](https://github.com/VerifyTests/Verify.RavenDb): Verification of [RavenDb](https://ravendb.net) bits.
+ * [Verify.SendGrid](https://github.com/VerifyTests/Verify.SendGrid): Verification of [SendGrid](https://github.com/sendgrid/sendgrid-csharp).
  * [Verify.Serilog](https://github.com/VerifyTests/Verify.Serilog): Verification of [Serilog](https://serilog.net/) bits.
  * [Verify.SqlServer](https://github.com/VerifyTests/Verify.SqlServer): Verification of SqlServer bits.
  * [Verify.SourceGenerators](https://github.com/VerifyTests/Verify.SourceGenerators): Verification of C# Source Generators.