net/http: spelling mistake in a comment

Fixes #28904

Author: haormj

src/net/http/transport.go

@@ -2416,7 +2416,7 @@ type fakeLocker struct{}
 func (fakeLocker) Lock()   {}
 func (fakeLocker) Unlock() {}
 
-// clneTLSConfig returns a shallow clone of cfg, or a new zero tls.Config if
+// cloneTLSConfig returns a shallow clone of cfg, or a new zero tls.Config if
 // cfg is nil. This is safe to call even if cfg is in active use by a TLS
 // client or server.
 func cloneTLSConfig(cfg *tls.Config) *tls.Config {