Add syntax highlighting for `.htm` and `.shtml` files (#6705)

SweetPPro created

enabled syntax highlighting for **.htm** and **.shtml** files

Release Notes:
- Added support for syntax highlighting in HTML files with `.htm` and
`.shtml` extensions
([#4510](https://github.com/zed-industries/zed/issues/4510)).

Change summary

crates/zed/src/languages/html/config.toml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Detailed changes