internal/fetch/dochtml: move package files to bottom of page

Package Files are now listed at the bottom of the doc page.

Fixes golang/go#40611

Change-Id: I66f229b7d826c5d5c9eede8a3dde3057b8a2eb9b
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/250544
Run-TryBot: Julie Qiu <[email protected]>
TryBot-Result: kokoro <[email protected]>
Reviewed-by: Jonathan Amsterdam <[email protected]>
Reviewed-by: Jamal Carvalho <[email protected]>

Author: julieqiu

internal/fetch/dochtml/template.go

@@ -71,11 +71,6 @@ var htmlPackage = template.Must(template.New("package").Funcs(
 					<a href="#pkg-examples" role="treeitem" aria-level="1" tabindex="-1">Examples</a>
 				</li>
 			{{end}}
-			{{if .Filenames}}
-				<li class="DocNav-files" role="none">
-					<a href="#pkg-files" role="treeitem" aria-level="1" tabindex="-1">Package Files</a>
-				</li>
-			{{end}}
 			{{if .Consts}}
 				<li class="DocNav-constants" role="none">
 					<a href="#pkg-constants" role="treeitem" aria-level="1" tabindex="-1">Constants</a>
@@ -144,6 +139,12 @@ var htmlPackage = template.Must(template.New("package").Funcs(
 					</ul>
 				</li>
 			{{end}}
+
+			{{if .Filenames}}
+				<li class="DocNav-files" role="none">
+					<a href="#pkg-files" role="treeitem" aria-level="1" tabindex="-1">Package Files</a>
+				</li>
+			{{end}}
 		</ul>
 	</nav>
 	<nav class="DocNavMobile js-mobileNav">
@@ -257,15 +258,6 @@ var htmlPackage = template.Must(template.New("package").Funcs(
 	</section>
 	{{- end -}}
 
-	<section class="Documentation-files">
-		<h3 tabindex="-1" id="pkg-files" class="Documentation-filesHeader">Package Files <a href="#pkg-files">¶</a></h3>
-		<ul class="Documentation-filesList">
-			{{- range .Filenames -}}
-				<li>{{file_link .}}</li>
-			{{- end -}}
-		</ul>
-	</section>
-
 	{{- if .Consts -}}
 	<section class="Documentation-constants">
 		<h3 tabindex="-1" id="pkg-constants" class="Documentation-constantsHeader">Constants <a href="#pkg-constants">¶</a></h3>{{"\n"}}
@@ -364,6 +356,15 @@ var htmlPackage = template.Must(template.New("package").Funcs(
 		</div>
 		{{- end -}}
 	</section>
+
+	<section class="Documentation-files">
+		<h3 tabindex="-1" id="pkg-files" class="Documentation-filesHeader">Package Files <a href="#pkg-files">¶</a></h3>
+		<ul class="Documentation-filesList">
+			{{- range .Filenames -}}
+				<li>{{file_link .}}</li>
+			{{- end -}}
+		</ul>
+	</section>
 	{{- end -}}
 {{- end -}}