doc: fix some HTML syntax errors
R=adg
CC=golang-dev
https://golang.org/cl/6458043
diff --git a/doc/install.html b/doc/install.html
index ae5bffa..ec78d2a 100644
--- a/doc/install.html
+++ b/doc/install.html
@@ -41,7 +41,7 @@
</tr>
<tr><td colspan="3"><hr></td></tr>
<tr><td>FreeBSD 7 or later</td> <td>amd64, 386</td> <td>Debian GNU/kFreeBSD not supported</td></tr>
-<tr><td>Linux 2.6.23 or later with glibc</td> <td>amd64, 386, arm</td> <td>CentOS/RHEL 5.x not supported; no binary distribution for ARM yet</tr>
+<tr><td>Linux 2.6.23 or later with glibc</td> <td>amd64, 386, arm</td> <td>CentOS/RHEL 5.x not supported; no binary distribution for ARM yet</td></tr>
<tr><td>Mac OS X 10.6/10.7</td> <td>amd64, 386</td> <td>use the gcc<sup>†</sup> that comes with Xcode</td></tr>
<tr><td>Windows 2000 or later</td> <td>amd64, 386</td> <td>use mingw gcc<sup>†</sup>; cygwin or msys is not needed</td></tr>
</table>
@@ -155,7 +155,7 @@
experimental MSI installer that configures your installation automatically.
</p>
-<h4 id="windows_zip">Zip archive</h3>
+<h4 id="windows_zip">Zip archive</h4>
<p>
Extract the <a href="http://code.google.com/p/go/downloads/list?q=OpSys-Windows+Type%3DArchive">zip file</a>
@@ -171,7 +171,7 @@
Add the <code>bin</code> subdirectory of your Go root (for example, <code>c:\Go\bin</code>) to to your <code>PATH</code> environment variable.
</p>
-<h4 id="windows_msi">MSI installer (experimental)</h3>
+<h4 id="windows_msi">MSI installer (experimental)</h4>
<p>
Open the <a href="http://code.google.com/p/go/downloads/list?q=OpSys-Windows+Type%3DInstaller">MSI file</a>