Update README

README.md

@@ -44,6 +44,6 @@ In most cases this command must be run by root user or through `sudo` command.
 
 BSD systems are not tested well. If ALSA works, Oto should work.
 
-#### Crosscompiling
+## Crosscompiling
 
 To crosscompile, make sure the libraries for the target architecture are installed, and set `CGO_ENABLED=1` as Go disables [Cgo](https://golang.org/cmd/cgo/#hdr-Using_cgo_with_the_go_command) on crosscompiles by default.