docs: fix some more anchors

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

docs/reference/commandline/images.md

@@ -294,7 +294,7 @@ busybox             uclibc              e02e811dd08f        5 weeks ago
 busybox             glibc               21c16b6787c6        5 weeks ago         4.19 MB
 ```
 
-### Format the output
+### <a name=format></a> Format the output (--format)
 
 The formatting option (`--format`) will pretty print container output
 using a Go template.

docs/reference/commandline/node_ls.md

@@ -29,7 +29,7 @@ Options:
 ## Description
 
 Lists all the nodes that the Docker Swarm manager knows about. You can filter
-using the `-f` or `--filter` flag. Refer to the [filtering](#filtering) section
+using the `-f` or `--filter` flag. Refer to the [filtering](#filter) section
 for more information about available filter options.
 
 > **Note**

docs/reference/commandline/node_ps.md

@@ -24,7 +24,7 @@ Options:
 ## Description
 
 Lists all the tasks on a Node that Docker knows about. You can filter using the
-`-f` or `--filter` flag. Refer to the [filtering](#filtering) section for more
+`-f` or `--filter` flag. Refer to the [filtering](#filter) section for more
 information about available filter options.
 
 > **Note**

docs/reference/commandline/plugin_ls.md

@@ -32,7 +32,7 @@ Options:
 Lists all the plugins that are currently installed. You can install plugins
 using the [`docker plugin install`](plugin_install.md) command.
 You can also filter using the `-f` or `--filter` flag.
-Refer to the [filtering](#filtering) section for more information about available filter options.
+Refer to the [filtering](#filter) section for more information about available filter options.
 
 ## Examples
 

docs/reference/commandline/service_create.md

@@ -299,7 +299,7 @@ $ docker service create \
 For more information about labels, refer to [apply custom
 metadata](https://docs.docker.com/config/labels-custom-metadata/).
 
-### Add bind mounts, volumes or memory filesystems
+### <a name=mount></a> Add bind mounts, volumes or memory filesystems (--mount)
 
 Docker supports three different kinds of mounts, which allow containers to read
 from or write to files or directories, either on the host operating system, or

docs/reference/commandline/service_inspect.md

@@ -149,9 +149,9 @@ Ports:
 
 You can also use `--format pretty` for the same effect.
 
+### <a name=format></a> Format the output (--format)
 
-#### Find the number of tasks running as part of a service
-
+You can use the --format option to obtain specific information about a
 The `--format` option can be used to obtain specific information about a
 service. For example, the following command outputs the number of replicas
 of the "redis" service.

docs/reference/commandline/service_update.md

@@ -156,7 +156,7 @@ point, effectively removing the `test-data` volume. Each command returns the
 service name.
 
 - The `--mount-add` flag takes the same parameters as the `--mount` flag on
-  `service create`. Refer to the [volumes and bind mounts](service_create.md#mount-add)
+  `service create`. Refer to the [volumes and bind mounts](service_create.md#mount)
   section in the `service create` reference for details.
 
 - The `--mount-rm` flag takes the `target` path of the mount.

docs/reference/commandline/volume_ls.md

@@ -33,7 +33,7 @@ Options:
 ## Description
 
 List all the volumes known to Docker. You can filter using the `-f` or
-`--filter` flag. Refer to the [filtering](#filtering) section for more
+`--filter` flag. Refer to the [filtering](#filter) section for more
 information about available filter options.
 
 ## Examples
@@ -56,7 +56,7 @@ local               rosemary
 local               tyler
 ```
 
-### Filtering
+### <a name=filter></a> Filtering (--filter)
 
 The filtering flag (`-f` or `--filter`) format is of "key=value". If there is more
 than one filter, then pass multiple flags (e.g., `--filter "foo=bar" --filter "bif=baz"`)