Add double quotes to copying string

apps/block_scout_web/lib/block_scout_web/templates/api_docs/_eth_rpc_item.html.eex

@@ -4,7 +4,7 @@
       <h3 class="api-doc-list-item-title"><%= @action %></h3>
       <p class="api-doc-list-item-contents"><%= raw @info.notes %></p>
       <span class="api-doc-list-item-query api-text-monospace api-text-monospace-background btn" 
-        data-clipboard-text="curl -X POST --data '{&quot;id&quot;:0,&quot;jsonrpc&quot;:&quot;2.0&quot;,&quot;method&quot;: &quot;<%= @action %>&quot;, params: []}'"
+        data-clipboard-text="curl -X POST --data '{&quot;id&quot;:0,&quot;jsonrpc&quot;:&quot;2.0&quot;,&quot;method&quot;: &quot;<%= @action %>&quot;,&quot;params&quot;: []}'"
       >
         curl -X POST --data '{"id":0,"jsonrpc":"2.0","method": "<%= @action %>", "params": []}'
       </span>