fix: DSN instead of KEY (#846)

Author: bruno-garcia

src/collections/_documentation/platforms/dotnet/log4net.md

@@ -31,7 +31,7 @@ This can be done, for example, via the `app.config` for console and desktop apps
 
 ```xml
   <appender name="SentryAppender" type="Sentry.Log4Net.SentryAppender, Sentry.Log4Net">
-      <Dsn value="___PUBLIC_KEY___"/>
+      <Dsn value="___PUBLIC_DSN___"/>
       <!--Sends the log event Identity value as the user-->
       <SendIdentity value="true" />
       <threshold value="INFO" />

src/collections/_documentation/platforms/dotnet/microsoft-extensions-logging.md

@@ -87,7 +87,7 @@ Example using `appsettings.json`:
     }
   },
   "Sentry": {
-    "Dsn": "___PUBLIC_KEY___",
+    "Dsn": "___PUBLIC_DSN___",
     "MinimumBreadcrumbLevel": "Warning",
     "MinimumEventLevel": "Critical",
     "MaxBreadcrumbs": 50