Update docs/embed.md

Co-authored-by: Marc <m@pyc.ac>
Signed-off-by: Andrey Bolonin <andreybolonin@users.noreply.github.com>

Author: andreybolonin

docs/embed.md

@@ -149,7 +149,7 @@ On Linux, the created binary is compressed using [UPX](https://upx.github.io).
 On macOS, to reduce the size of the file before sending it, you can compress it.
 We recommend `xz`.
 
-## Disable UPX
+### Disable UPX
 ```console
 RUN NO_COMPRESS=1 ./build-static.sh
 ```