Only adjust margins at top and bottom of figcaption

Author: gabalafou

src/pydata_sphinx_theme/assets/styles/content/_figures.scss

@@ -15,10 +15,11 @@ figure {
     color: var(--pst-color-text-muted);
     margin-left: auto;
     margin-right: auto;
+    margin-top: 0.3rem;
 
-    p {
-      margin-top: 0.3rem;
-      margin-bottom: 0rem;
+    & > p:last-child {
+      // Don't add extra margin to already existing figure bottom margin
+      margin-bottom: 0;
     }
 
     table.table {