Simplify firefox title with version selector.

Add ability to get win32 package variant.

Author: rosolko

WebDriverManager/DriverConfigs/Impl/FirefoxConfig.cs

@@ -16,7 +16,8 @@ public virtual string GetName()
 
         public virtual string GetUrl32()
         {
-            return GetUrl64();
+            return
+                "https://github.com/mozilla/geckodriver/releases/download/v<version>/geckodriver-v<version>-win32.zip";
         }
 
         public virtual string GetUrl64()
@@ -38,12 +39,12 @@ public virtual string GetLatestVersion()
                 var htmlCode = client.DownloadString("https://github.com/mozilla/geckodriver/releases");
                 var parser = new HtmlParser(Configuration.Default.WithDefaultLoader());
                 var document = parser.Parse(htmlCode);
-                var version = document.QuerySelectorAll("[class~='release-title'] a")
+                var version = document.QuerySelectorAll(".release-title > a")
                     .Select(element => element.TextContent)
                     .FirstOrDefault()
                     ?.Remove(0, 1);
                 return version;
             }
         }
     }
-}
+}