[mdn] WEB-73029 Wide gaps in params section of JS documentation

GitOrigin-RevId: 05157a3ab920f4224d6cf401eee49e817b835df8

xml/xml-psi-impl/src/com/intellij/documentation/mdn/MdnDocumentation.kt

@@ -764,12 +764,17 @@ private fun buildDoc(
 
 fun buildSubSection(items: Map<String, String>): String {
   val result = StringBuilder()
-  items.forEach { (name, doc) ->
-    result.append("<p><code>")
+  items.entries.forEachIndexed { index, (name, doc) ->
+    if (index < items.size - 1) {
+      result.append("<p class='mdn-bottom-margin'>")
+    } else {
+      result.append("<p>")
+    }
+    result.append("<code>")
       .append(name)
       .append("</code> &ndash; ")
       .append(doc)
-      .append("<br><span style='font-size:0.2em'>&nbsp;</span>\n")
+      .append("\n")
   }
   return result.toString()
 }

xml/xml-psi-impl/src/com/intellij/documentation/mdn/MdnDocumentationCssProvider.kt

@@ -33,6 +33,10 @@ class MdnDocumentationCssProvider : DocumentationCssProvider {
             margin: 0;
             line-height: 100%;
         }
+        
+        .mdn-bottom-margin {
+            margin-bottom: ${afterSpacing * 2}px
+        }
     """.trimIndent()
   }
 }