docs: set unsafe HTML parsing to false and fix raw HTML insertion

This means that markdown files can't contain <thing> any more.

docs/content/amazonclouddrive.md

@@ -4,7 +4,7 @@ description: "Rclone docs for Amazon Drive"
 date: "2017-06-10"
 ---
 
-<i class="fab fa-amazon"></i> Amazon Drive
+{{< icon "fab fa-amazon" >}} Amazon Drive
 -----------------------------------------
 
 Amazon Drive, formerly known as Amazon Cloud Drive, is a cloud storage
@@ -159,7 +159,7 @@ Let's say you usually use `amazon.co.uk`. When you authenticate with
 rclone it will take you to an `amazon.com` page to log in.  Your
 `amazon.co.uk` email and password should work here just fine.
 
-<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/amazonclouddrive/amazonclouddrive.go then run make backenddocs -->
+{{< rem autogenerated options start" - DO NOT EDIT - instead edit fs.RegInfo in backend/amazonclouddrive/amazonclouddrive.go then run make backenddocs" >}}
 ### Standard Options
 
 Here are the standard options specific to amazon cloud drive (Amazon Drive).
@@ -273,7 +273,7 @@ See: the [encoding section in the overview](/overview/#encoding) for more info.
 - Type:        MultiEncoder
 - Default:     Slash,InvalidUtf8,Dot
 
-<!--- autogenerated options stop -->
+{{< rem autogenerated options stop >}}
 
 ### Limitations ###