[GH-19267] Spelling comments (#19268)

* spelling: comments

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
Co-authored-by: Josh Soref <jsoref@users.noreply.github.com>
Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/plugin.go

@@ -639,7 +639,7 @@ func (a *App) mergePrepackagedPlugins(remoteMarketplacePlugins map[string]*model
 			continue
 		}
 
-		// If available in the markteplace, only overwrite if newer.
+		// If available in the marketplace, only overwrite if newer.
 		prepackagedVersion, err := semver.Parse(prepackaged.Manifest.Version)
 		if err != nil {
 			return model.NewAppError("mergePrepackagedPlugins", "app.plugin.invalid_version.app_error", nil, err.Error(), http.StatusBadRequest)