You can specify the anchors as you like…
## heading_1 {#heading1}
asdf
## CPU%Too_High {#cputoohigh}
asdf
## Third Heading {#third-heading}
asdf
You cannot apply the GFM style anchor generation as Hugo uses Blackfriday (another flavor of md processing like GFM)… but you can specify/override the anchors to your wish as shown above.