Fix typo in docshelper.go

Fixes #8380

Author: jmooring

output/docshelper.go

@@ -55,7 +55,7 @@ func createLayoutExamples() interface{} {
 		{"Home page with type set", LayoutDescriptor{Kind: "home", Type: demoType}, HTMLFormat},
 		{"Base template for home page with type set", LayoutDescriptor{Baseof: true, Kind: "home", Type: demoType}, HTMLFormat},
 		{"Home page with layout set", LayoutDescriptor{Kind: "home", Type: "page", Layout: demoLayout}, HTMLFormat},
-		{`AMP home, French language"`, LayoutDescriptor{Kind: "home", Type: "page", Lang: "fr"}, AMPFormat},
+		{"AMP home, French language", LayoutDescriptor{Kind: "home", Type: "page", Lang: "fr"}, AMPFormat},
 		{"JSON home", LayoutDescriptor{Kind: "home", Type: "page"}, JSONFormat},
 		{"RSS home", LayoutDescriptor{Kind: "home", Type: "page"}, RSSFormat},
 		{"RSS section posts", LayoutDescriptor{Kind: "section", Type: "posts"}, RSSFormat},