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/cache.md

@@ -4,7 +4,7 @@ description: "Rclone docs for cache remote"
 date: "2017-09-03"
 ---
 
-<i class="fa fa-archive"></i> Cache (BETA)
+{{< icon "fa fa-archive" >}} Cache (BETA)
 -----------------------------------------
 
 The `cache` remote wraps another existing remote and stores file structure
@@ -257,13 +257,13 @@ using the `crypt` remote. `crypt` uses a similar technique to wrap around
 an existing remote and handles this translation in a seamless way.
 
 There is an issue with wrapping the remotes in this order:
-<span style="color:red">**cloud remote** -> **crypt** -> **cache**</span>
+{{<color red>}}**cloud remote** -> **crypt** -> **cache**{{</color>}}
 
 During testing, I experienced a lot of bans with the remotes in this order.
 I suspect it might be related to how crypt opens files on the cloud provider
 which makes it think we're downloading the full file instead of small chunks.
 Organizing the remotes in this order yields better results:
-<span style="color:green">**cloud remote** -> **cache** -> **crypt**</span>
+{{<color green>}}**cloud remote** -> **cache** -> **crypt**{{</color>}}
 
 #### absolute remote paths ####
 
@@ -290,7 +290,7 @@ Params:
   - **remote** = path to remote **(required)**
   - **withData** = true/false to delete cached data (chunks) as well _(optional, false by default)_
 
-<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/cache/cache.go then run make backenddocs -->
+{{< rem autogenerated options start" - DO NOT EDIT - instead edit fs.RegInfo in backend/cache/cache.go then run make backenddocs" >}}
 ### Standard Options
 
 Here are the standard options specific to cache (Cache a remote).
@@ -405,7 +405,7 @@ The plex token for authentication - auto set normally
 
 #### --cache-plex-insecure
 
-Skip all certificate verification when connecting to the Plex server
+Skip all certificate verifications when connecting to the Plex server
 
 - Config:      plex_insecure
 - Env Var:     RCLONE_CACHE_PLEX_INSECURE
@@ -601,4 +601,26 @@ If you set it to 0 then it will wait forever.
 - Type:        Duration
 - Default:     1s
 
-<!--- autogenerated options stop -->
+### Backend commands
+
+Here are the commands specific to the cache backend.
+
+Run them with with
+
+    rclone backend COMMAND remote:
+
+The help below will explain what arguments each command takes.
+
+See [the "rclone backend" command](/commands/rclone_backend/) for more
+info on how to pass options and arguments.
+
+These can be run on a running backend using the rc command
+[backend/command](/rc/#backend/command).
+
+#### stats
+
+Print stats on the cache backend in JSON format.
+
+    rclone backend stats remote: [options] [<arguments>+]
+
+{{< rem autogenerated options stop >}}