WASM REPL: lower-case 'code' on 'Run code' button

Author: adqm

Tools/wasm/emscripten/web_example/index.html

@@ -619,7 +619,7 @@
         <h1>Simple REPL for Python WASM</h1>
         <div id="editor">print('Welcome to WASM!')</div>
         <div class="button-container">
-            <button id="run" disabled>Run Code</button>
+            <button id="run" disabled>Run code</button>
             <button id="repl" disabled>Start REPL</button>
             <button id="stop" disabled>Stop</button>
             <button id="clear" disabled>Clear</button>