Fix various documentation, user-facing, and source comment typos (#16367)

* Fix various doc, user-facing, and source comment typos

Found via `codespell -q 3 -S ./options/locale,./vendor -L ba,pullrequest,pullrequests,readby`

modules/setting/indexer.go

@@ -101,7 +101,7 @@ func IndexerGlobFromString(globstr string) []glob.Glob {
 		expr = strings.TrimSpace(expr)
 		if expr != "" {
 			if g, err := glob.Compile(expr, '.', '/'); err != nil {
-				log.Info("Invalid glob expresion '%s' (skipped): %v", expr, err)
+				log.Info("Invalid glob expression '%s' (skipped): %v", expr, err)
 			} else {
 				extarr = append(extarr, g)
 			}