Add missing instructions

virtweb_frontend/src/widgets/net/NetworkHookStatusWidget.tsx

@@ -40,6 +40,8 @@ function NetworkHookStatusWidgetInner(p: {
       </Alert>
     );
 
+  const makeExecutable = `chmod +x ${p.status.path}`;
+
   return (
     <Alert variant="outlined" severity="warning" style={{ margin: "20px 0px" }}>
       The network hook has not been detected on this system. It must be
@@ -57,6 +59,12 @@ function NetworkHookStatusWidgetInner(p: {
         <CodeBlock>{p.status.content}</CodeBlock>
       </CopyToClipboard>
       <br />
+      Make sure that the created file is executable :
+      <br />
+      <CopyToClipboard content={makeExecutable}>
+        <CodeBlock>{makeExecutable}</CodeBlock>
+      </CopyToClipboard>
+      <br />
       You will need then to restart both <InlineCode>
         libvirtd
       </InlineCode> and <InlineCode>VirtWeb</InlineCode>.