Include the 5.4.1 tag in the final generated document

docs/document/themes/hugo-theme-learn/layouts/partials/language.html

@@ -1,6 +1,6 @@
 {{ $currentNode := . }}
 {{ $permalink := string .Permalink }}
-{{ $v5 := slice "5.4.0" "5.3.2" "5.3.1" "5.3.0" "5.2.1" "5.2.0" "5.1.2" "5.1.1" "5.1.0" "5.0.0"}}
+{{ $v5 := slice "5.4.1" "5.4.0" "5.3.2" "5.3.1" "5.3.0" "5.2.1" "5.2.0" "5.1.2" "5.1.1" "5.1.0" "5.0.0"}}
 {{ $v4 := slice "4.1.1" "4.1.0" "4.0.1" "4.0.0"}}
 {{ $v3 := slice "3.1.0" "3.0.0"}}
 {{ $v2 := slice "2.0.3" "2.0.2" "2.0.1" "2.0.0"}}