Based on this question
{
"key": "ctrl+up",
"command": "editor.action.smartSelect.grow",
"when": "editorTextFocus"
},
{
"key": "ctrl+up",
"command": "editor.emmet.action.balanceOut",
"when": "editorTextFocus && editorLangId == html && editorHasSelection"
},
{
"key": "ctrl+down",
"command": "editor.action.smartSelect.shrink",
"when": "editorTextFocus"
},
{
"key": "ctrl-down",
"command": "editor.emmet.action.balanceIn",
"when": "editorTextFocus && editorLangId == html"
},