Update dotnet sdk and psd1

Author: alerickson

global.json

@@ -1,5 +1,5 @@
 {
     "sdk": {
-        "version": "8.0.304"
+        "version": "8.0.8"
     }
 }

src/Microsoft.PowerShell.PSResourceGet.psd1

@@ -62,7 +62,7 @@
 
 - New cmdlet `Compress-PSResource` which packs a package into a .nupkg and saves it to the file system (#1682, #1702)
 - New `-Nupkg` parameter for `Publish-PSResource` which pushes pushes a .nupkg to a repository (#1682)
-- New `-ModulePrefix` parameter for `Publish-PSResource` which adds a prefix to a module name (#1694)
+- New `-ModulePrefix` parameter for `Publish-PSResource` which adds a prefix to a module name for container registry repositories to add a module prefix.This is only used for publishing and is not part of metadata. MAR will drop the prefix when syndicating from ACR to MAR (#1694)
 
 ### Bug Fixes