cmd/vet: add lost checks in doc

Change-Id: Iacbcb582e263149fede734822cba2df4b8162968
Reviewed-on: https://go-review.googlesource.com/c/go/+/544015
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Tim King <taking@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

src/cmd/vet/doc.go

@@ -27,24 +27,34 @@ program correctness.
 
 To list the available checks, run "go tool vet help":
 
+	appends          check for missing values after append
 	asmdecl          report mismatches between assembly files and Go declarations
 	assign           check for useless assignments
 	atomic           check for common mistakes using the sync/atomic package
 	bools            check for common mistakes involving boolean operators
-	buildtag     check that +build tags are well-formed and correctly located
+	buildtag         check //go:build and // +build directives
 	cgocall          detect some violations of the cgo pointer passing rules
 	composites       check for unkeyed composite literals
 	copylocks        check for locks erroneously passed by value
+	defers           report common mistakes in defer statements
+	directive        check Go toolchain directives such as //go:debug
+	errorsas         report passing non-pointer or non-error values to errors.As
+	framepointer     report assembly that clobbers the frame pointer before saving it
 	httpresponse     check for mistakes using HTTP responses
+	ifaceassert      detect impossible interface-to-interface type assertions
 	loopclosure      check references to loop variables from within nested functions
 	lostcancel       check cancel func returned by context.WithCancel is called
 	nilfunc          check for useless comparisons between functions and nil
 	printf           check consistency of Printf format strings and arguments
 	shift            check for shifts that equal or exceed the width of the integer
-	slog         check for incorrect arguments to log/slog functions
+	sigchanyzer      check for unbuffered channel of os.Signal
+	slog             check for invalid structured logging calls
 	stdmethods       check signature of methods of well-known interfaces
+	stringintconv    check for string(int) conversions
 	structtag        check that struct field tags conform to reflect.StructTag.Get
+	testinggoroutine report calls to (*testing.T).Fatal from goroutines started by a test
 	tests            check for common mistaken usages of tests and examples
+	timeformat       check for calls of (time.Time).Format or time.Parse with 2006-02-01
 	unmarshal        report passing non-pointer or non-interface values to unmarshal
 	unreachable      check for unreachable code
 	unsafeptr        check for invalid conversions of uintptr to unsafe.Pointer