Fix some typos found by codespell

See,
$ codespell -S "./.git*,./vendor*,./public*"

pkg/services/alerting/extractor.go

@@ -82,12 +82,13 @@ func (e *DashAlertExtractor) getAlertFromPanels(jsonWithPanels *simplejson.Json,
 		if collapsed && collapsedJSON.MustBool() {
 
 			// extract alerts from sub panels for collapsed panels
-			als, err := e.getAlertFromPanels(panel, validateAlertFunc)
+			alertSlice, err := e.getAlertFromPanels(panel,
+				validateAlertFunc)
 			if err != nil {
 				return nil, err
 			}
 
-			alerts = append(alerts, als...)
+			alerts = append(alerts, alertSlice...)
 			continue
 		}
 

pkg/services/alerting/notifiers/teams.go

@@ -74,7 +74,7 @@ func (this *TeamsNotifier) Notify(evalContext *alerting.EvalContext) error {
 	}
 
 	message := ""
-	if evalContext.Rule.State != m.AlertStateOK { //dont add message when going back to alert state ok.
+	if evalContext.Rule.State != m.AlertStateOK { //don't add message when going back to alert state ok.
 		message = evalContext.Rule.Message
 	}
 

pkg/services/provisioning/datasources/testdata/broken-yaml/commented.yaml

@@ -4,7 +4,7 @@
 #     org_id: 1
 
 # # list of datasources to insert/update depending
-# # whats available in the datbase
+# # what's available in the datbase
 #datasources:
 #   # <string, required> name of the datasource. Required
 # - name: Graphite

pkg/services/rendering/http_mode.go

@@ -70,7 +70,7 @@ func (rs *RenderingService) renderViaHttp(ctx context.Context, opts Opts) (*Rend
 		return nil, ErrTimeout
 	}
 
-	// if we didnt get a 200 response, something went wrong.
+	// if we didn't get a 200 response, something went wrong.
 	if resp.StatusCode != http.StatusOK {
 		rs.log.Error("Remote rendering request failed", "error", resp.Status)
 		return nil, fmt.Errorf("Remote rendering request failed. %d: %s", resp.StatusCode, resp.Status)
@@ -83,7 +83,7 @@ func (rs *RenderingService) renderViaHttp(ctx context.Context, opts Opts) (*Rend
 	defer out.Close()
 	_, err = io.Copy(out, resp.Body)
 	if err != nil {
-		// check that we didnt timeout while receiving the response.
+		// check that we didn't timeout while receiving the response.
 		if reqContext.Err() == context.DeadlineExceeded {
 			rs.log.Info("Rendering timed out")
 			return nil, ErrTimeout

pkg/services/rendering/rendering.go

@@ -45,7 +45,7 @@ func (rs *RenderingService) Init() error {
 
 	// set value used for domain attribute of renderKey cookie
 	if rs.Cfg.RendererUrl != "" {
-		// RendererCallbackUrl has already been passed, it wont generate an error.
+		// RendererCallbackUrl has already been passed, it won't generate an error.
 		u, _ := url.Parse(rs.Cfg.RendererCallbackUrl)
 		rs.domain = u.Hostname()
 	} else if setting.HttpAddr != setting.DEFAULT_HTTP_ADDR {

pkg/services/sqlstore/migrations/annotation_mig.go

@@ -105,7 +105,7 @@ func addAnnotationMig(mg *Migrator) {
 	}))
 
 	//
-	// Convert epoch saved as seconds to miliseconds
+	// Convert epoch saved as seconds to milliseconds
 	//
 	updateEpochSql := "UPDATE annotation SET epoch = (epoch*1000) where epoch < 9999999999"
 	mg.AddMigration("Convert existing annotations from seconds to milliseconds", NewRawSqlMigration(updateEpochSql))

pkg/services/sqlstore/transactions_test.go

@@ -39,7 +39,7 @@ func TestTransaction(t *testing.T) {
 			So(err, ShouldEqual, models.ErrInvalidApiKey)
 		})
 
-		Convey("wont update if one handler fails", func() {
+		Convey("won't update if one handler fails", func() {
 			err := ss.InTransaction(context.Background(), func(ctx context.Context) error {
 				err := DeleteApiKeyCtx(ctx, deleteApiKeyCmd)
 				if err != nil {