Update sample projects & samples in docs (#2823)

* update them all

* more docs

* moar docs

samples/TextCommandFramework/Services/PictureService.cs

@@ -2,19 +2,18 @@ using System.IO;
 using System.Net.Http;
 using System.Threading.Tasks;
 
-namespace TextCommandFramework.Services
+namespace TextCommandFramework.Services;
+
+public class PictureService
 {
-    public class PictureService
+    private readonly HttpClient _http;
+
+    public PictureService(HttpClient http)
+        => _http = http;
+
+    public async Task<Stream> GetCatPictureAsync()
     {
-        private readonly HttpClient _http;
-
-        public PictureService(HttpClient http)
-            => _http = http;
-
-        public async Task<Stream> GetCatPictureAsync()
-        {
-            var resp = await _http.GetAsync("https://cataas.com/cat");
-            return await resp.Content.ReadAsStreamAsync();
-        }
+        var resp = await _http.GetAsync("https://cataas.com/cat");
+        return await resp.Content.ReadAsStreamAsync();
     }
 }