add docs about raw html

htmgo-site/md/docs/2_core-concepts/6_raw_html.md

@@ -0,0 +1,22 @@
+**Rendering Raw Html**
+
+In some cases, you may want to render raw HTML instead of using htmgo's functions.
+This can be done by using the following methods:
+```go
+h.UnsafeRaw(string)
+h.UnsafeRawF(string, ...interface{})
+h.UnsafeRawScript(string)
+```
+
+Usage:
+```go
+
+h.UnsafeRaw("<div>Raw HTML</div>")
+h.UnsafeRawF("<div>%s</div>", "Raw HTML")
+h.UnsafeRawScript("<script>alert('Hello World')</script>")
+```
+
+Important: Be careful when using these methods, these methods do not escape the HTML content 
+and should **never** be used with user input unless you have sanitized the input.
+
+Sanitizing input can be done using the `html.EscapeString` function or by using https://github.com/microcosm-cc/bluemonday.