Fix the (NuGet package) description in the csproj (#9)

Author: 0xced

src/Serilog.Sinks.RichTextBox.Wpf/Serilog.Sinks.RichTextBox.Wpf.csproj

@@ -33,7 +33,7 @@
     <Version>0.0.1-local</Version>
     <Authors>C. Augusto Proiete &amp; Contributors</Authors>
     <Company>augustoproiete.net</Company>
-    <Description>A Serilog sink that writes log events to Notepad.</Description>
+    <Description>A Serilog sink that writes log events to any WPF RichTextBox control with coloring and custom theme support.</Description>
     <Copyright>Copyright 2021 C. Augusto Proiete &amp; Contributors - Provided under the Apache License, Version 2.0</Copyright>
     <PackageTags>serilog;sinks;richtextbox;wpf;windows;sink;colored;colors;color;theme;themes;windows-presentation-foundation;textbox</PackageTags>
     <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>