better godoc documentation

README.adoc

@@ -14,6 +14,8 @@ Last updated {localdatetime}
 :toclevels: 7
 :source-highlighter: rouge
 
+image::https://pkg.go.dev/badge/r00t2.io/gosecret.svg[link="https://pkg.go.dev/r00t2.io/gosecret"]
+
 This project is originally forked from https://github.com/gsterjov/go-libsecret[go-libsecret^] due to:
 
 * Lack of response from the developer
@@ -32,7 +34,7 @@ To use this library as a replacement without significantly modifying your code,
 .go.mod
 [source]
 ----
-# ...
+// ...
 replace (
     github.com/gsterjov/go-libsecret dev => r00t2.io/gosecret v0
 )
@@ -48,7 +50,7 @@ To use the new version,
 [source,go]
 ----
 import (
-    `r00t2.io/gosecret/v1`
+	`r00t2.io/gosecret/v1`
 )
 ----