docs: cleanup header levels in backend docs (#5698)

docs/content/azureblob.md

@@ -9,6 +9,8 @@ Paths are specified as `remote:container` (or `remote:` for the `lsd`
 command.)  You may put subdirectories in too, e.g.
 `remote:container/path/to/dir`.
 
+## Configuration
+
 Here is an example of making a Microsoft Azure Blob Storage
 configuration.  For a remote called `remote`.  First run:
 
@@ -66,13 +68,13 @@ files in the container.
 
     rclone sync -i /home/local/directory remote:container
 
-### --fast-list ###
+### --fast-list
 
 This remote supports `--fast-list` which allows you to use fewer
 transactions in exchange for more memory. See the [rclone
 docs](/docs/#fast-list) for more details.
 
-### Modified time ###
+### Modified time
 
 The modified time is stored as metadata on the object with the `mtime`
 key.  It is stored using RFC3339 Format time with nanosecond
@@ -99,7 +101,7 @@ These only get replaced if they are the last character in the name:
 Invalid UTF-8 bytes will also be [replaced](/overview/#invalid-utf8),
 as they can't be used in JSON strings.
 
-### Hashes ###
+### Hashes
 
 MD5 hashes are stored with blobs.  However blobs that were uploaded in
 chunks only have an MD5 if the source remote was capable of MD5
@@ -407,7 +409,8 @@ Public access level of a container: blob, container.
         - Allow full public read access for container and blob data.
 
 {{< rem autogenerated options stop >}}
-### Limitations ###
+
+## Limitations
 
 MD5 sums are only uploaded with chunked files if the source has an MD5
 sum.  This will always be the case for a local to azure copy.
@@ -420,7 +423,8 @@ remote.
 See [List of backends that do not support rclone about](https://rclone.org/overview/#optional-features)
 See [rclone about](https://rclone.org/commands/rclone_about/)
 
-### Azure Storage Emulator Support ###
+## Azure Storage Emulator Support
+
 You can test rclone with storage emulator locally, to do this make sure azure storage emulator
 installed locally and set up a new remote with `rclone config` follow instructions described in
 introduction, set `use_emulator` config as `true`, you do not need to provide default account name