doc/go1.15: sort debug/pe entry alphabetically

For #37419

Change-Id: If98ecffbfd976cb66a87b1cce4e82b3ddee1639e
Reviewed-on: https://go-review.googlesource.com/c/go/+/237738
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
diff --git a/doc/go1.15.html b/doc/go1.15.html
index d6e238e..80f0e00 100644
--- a/doc/go1.15.html
+++ b/doc/go1.15.html
@@ -374,17 +374,6 @@
   in mind.
 </p>
 
-<dl id="debug/pe"><dt><a href="/pkg/debug/pe/">debug/pe</a></dt>
-  <dd>
-    <p><!-- CL 222637 -->
-      The package now defines the
-      <code>IMAGE_FILE</code>, <code>IMAGE_SUBSYSTEM</code>,
-      and <code>IMAGE_DLLCHARACTERISTICS</code> constants used by the
-      PE file format.
-    </p>
-  </dd>
-</dl><!-- debug/pe -->
-
 <dl id="crypto"><dt><a href="/pkg/crypto/">crypto</a></dt>
   <dd>
     <p><!-- CL 231417, CL 225460 -->
@@ -551,6 +540,17 @@
   </dd>
 </dl><!-- crypto/x509/pkix -->
 
+<dl id="debug/pe"><dt><a href="/pkg/debug/pe/">debug/pe</a></dt>
+  <dd>
+    <p><!-- CL 222637 -->
+      The package now defines the
+      <code>IMAGE_FILE</code>, <code>IMAGE_SUBSYSTEM</code>,
+      and <code>IMAGE_DLLCHARACTERISTICS</code> constants used by the
+      PE file format.
+    </p>
+  </dd>
+</dl><!-- debug/pe -->
+
 <dl id="encoding/json"><dt><a href="/pkg/encoding/json/">encoding/json</a></dt>
   <dd>
     <p><!-- CL 191783 -->