Add unitless type

docs/_data/variables/base/generic.json

@@ -15,7 +15,7 @@
     "$body-rendering": {
       "name": "$body-rendering",
       "value": "optimizeLegibility",
-      "type": "string"
+      "type": "keyword"
     },
     "$body-family": {
       "name": "$body-family",
@@ -41,7 +41,7 @@
     "$body-line-height": {
       "name": "$body-line-height",
       "value": "1.5",
-      "type": "string"
+      "type": "unitless"
     },
     "$code-family": {
       "name": "$code-family",
@@ -58,7 +58,7 @@
     "$code-weight": {
       "name": "$code-weight",
       "value": "normal",
-      "type": "string"
+      "type": "font-weight"
     },
     "$code-size": {
       "name": "$code-size",
@@ -80,7 +80,7 @@
     "$hr-margin": {
       "name": "$hr-margin",
       "value": "1.5rem 0",
-      "type": "string"
+      "type": "size"
     },
     "$strong-color": {
       "name": "$strong-color",