fix: #9 do not print functions, use them directly

Printing tags just renders them as a string.

Author: byashimov

internal/provider/template.go

@@ -229,7 +229,7 @@ description: |-
 {{ if .HasExample -}}
 ## Example Usage
 
-{{ printf "{{tffile %q}}" .ExampleFile }}
+{{ tffile .ExampleFile }}
 {{- end }}
 
 {{ .SchemaMarkdown | trimspace }}
@@ -239,7 +239,7 @@ description: |-
 
 Import is supported using the following syntax:
 
-{{ printf "{{codefile \"shell\" %q}}" .ImportFile }}
+{{ codefile "shell %q" .ImportFile }}
 {{- end }}
 `
 
@@ -258,7 +258,7 @@ description: |-
 {{ if .HasExample -}}
 ## Example Usage
 
-{{ printf "{{tffile %q}}" .ExampleFile }}
+{{ tffile .ExampleFile }}
 {{- end }}
 
 {{ .SchemaMarkdown | trimspace }}