Change syntax of install command

Use the original `-e "$()"` syntax instead of `<()` as the latter fails when
run as root via `sudo` and produces an incomprehensible error message.

Fixes #14923.

index.html

@@ -118,7 +118,7 @@ <h1><a href="./">Homebrew</a></h1>
           <li>
             <div class="group row">
               <h2>Install Homebrew</h2>
-              <pre style='clear:both;text-align:center;margin:0 -0.5em;margin-bottom:0.9em'><code id='selectable' onclick="selectText()">ruby &lt;(curl -fsSkL raw.github.com/mxcl/homebrew/go)</code></pre>
+              <pre style='clear:both;text-align:center;margin:0 -1.5em;margin-bottom:0.9em'><code id='selectable' onclick="selectText()">ruby -e &quot;$(curl -fsSkL raw.github.com/mxcl/homebrew/go)&quot;</code></pre>
               <div class="col-2">
                 <p>Paste that at a Terminal prompt.</p>
                 <p>The script explains what it will do and then pauses before it does it. There are more installation options <a href='https://github.com/mxcl/homebrew/wiki/Installation'>here</a>.