Improve rendering search results of plugin content types on web interface

Render only the entry from plugin search response instead of raw json
Use the results-ledger styling for results-plugin styling

src/khoj/interface/web/index.html

@@ -56,7 +56,9 @@
             } else if (type === "ledger") {
                 return render_ledger(query, data);
             } else {
-                return `<pre id="json">${JSON.stringify(data, null, 2)}</pre>`;
+                return `<div id="results-plugin">`
+                    + data.map((item) => `<p>${item.entry}</p>`).join("\n")
+                    + `</div>`;
             }
         }
 
@@ -277,9 +279,10 @@
         #json {
             white-space: pre-wrap;
         }
+        #results-plugin,
         #results-ledger {
-            white-space: pre-line;
             text-align: left;
+            white-space: pre-line;
         }
          #results-markdown {
             text-align: left;