update styling for illustrated message (#6129)

Author: yihuiliao

packages/@adobe/spectrum-css-temp/components/illustratedmessage/index.css

@@ -42,20 +42,20 @@ governing permissions and limitations under the License.
     max-width: var(--spectrum-illustrated-message-heading-max-width);
     margin: var(--spectrum-illustrated-message-heading-margin);
 
-    font-size: var(--spectrum-heading-quiet-2-text-size);
-    font-weight: var(--spectrum-heading-quiet-2-text-font-weight);
-    line-height: var(--spectrum-heading-quiet-2-text-line-height);
-    font-style: var(--spectrum-heading-quiet-2-text-font-style);
-    letter-spacing: var(--spectrum-heading-quiet-2-text-letter-spacing);
-    text-transform: var(--spectrum-heading-quiet-2-text-transform);
+    font-size: var(--spectrum-heading-3-text-size);
+    font-weight: var(--spectrum-heading-3-text-font-weight);
+    line-height: var(--spectrum-heading-3-text-line-height);
+    font-style: var(--spectrum-heading-3-text-font-style);
+    letter-spacing: var(--spectrum-heading-3-text-letter-spacing);
+    text-transform: var(--spectrum-heading-3-text-transform);
   }
 
   .spectrum-IllustratedMessage-description {
     order: 3;
     max-width: var(--spectrum-illustrated-message-description-max-width);
     margin: var(--spectrum-illustrated-message-description-margin);
 
-    font-style: var(--spectrum-body-4-emphasis-text-font-style);
+    font-style: var(--spectrum-body-4-text-font-style);
 
     font-size: var(--spectrum-body-4-text-size);
     font-weight: var(--spectrum-body-4-text-font-weight);