Fix typos

Author: Jack251970

Flow.Launcher/Helper/PluginInstallationHelper.cs

@@ -235,7 +235,7 @@ await App.API.ShowProgressBoxAsync(prgBoxTitle,
                 {
                     if (reportProgress == null)
                     {
-                        // when reportProgress is null, it means there is expcetion with the progress box
+                        // when reportProgress is null, it means there is exception with the progress box
                         // so we record it with exceptionHappened and return so that progress box will close instantly
                         exceptionHappened = true;
                         return;

Plugins/Flow.Launcher.Plugin.PluginsManager/PluginsManager.cs

@@ -209,7 +209,7 @@ await Context.API.ShowProgressBoxAsync(prgBoxTitle,
                     {
                         if (reportProgress == null)
                         {
-                            // when reportProgress is null, it means there is expcetion with the progress box
+                            // when reportProgress is null, it means there is exception with the progress box
                             // so we record it with exceptionHappened and return so that progress box will close instantly
                             exceptionHappened = true;
                             return;