Pieria: update heading font family (#7238)

* Remove Rubik from heading typography

* Fix incorrect lineHeight types

pieria/theme.json

@@ -361,7 +361,7 @@
 					"fontSize": "16px",
 					"fontStyle": "normal",
 					"fontWeight": "600",
-					"lineHeight": 1.4
+					"lineHeight": "1.4"
 				}
 			},
 			"h3": {
@@ -369,7 +369,7 @@
 					"fontSize": "16px",
 					"fontStyle": "normal",
 					"fontWeight": "600",
-					"lineHeight": 1.4
+					"lineHeight": "1.4"
 				}
 			},
 			"h4": {
@@ -377,7 +377,7 @@
 					"fontSize": "16px",
 					"fontStyle": "normal",
 					"fontWeight": "600",
-					"lineHeight": 1.4
+					"lineHeight": "1.4"
 				}
 			},
 			"h5": {
@@ -385,7 +385,7 @@
 					"fontSize": "16px",
 					"fontStyle": "normal",
 					"fontWeight": "600",
-					"lineHeight": 1.4
+					"lineHeight": "1.4"
 				}
 			},
 			"h6": {
@@ -393,12 +393,11 @@
 					"fontSize": "16px",
 					"fontStyle": "normal",
 					"fontWeight": "600",
-					"lineHeight": 1.4
+					"lineHeight": "1.4"
 				}
 			},
 			"heading": {
 				"typography": {
-					"fontFamily": "var(--wp--preset--font-family--rubik)",
 					"fontStyle": "normal",
 					"fontWeight": "600",
 					"lineHeight": "1.4"
@@ -416,7 +415,7 @@
 				"typography": {
 					"fontStyle": "normal",
 					"fontWeight": "400",
-					"lineHeight": 1.4
+					"lineHeight": "1.4"
 				}
 			}
 		},