docs: move --tmpfs to docker run reference

Signed-off-by: David Karlsson <35727626+dvdksn@users.noreply.github.com>

docs/reference/commandline/run.md

@@ -372,16 +372,18 @@ Under these conditions, you can pass any size less than the backing filesystem s
 For the `windowsfilter`, `btrfs`, and `zfs` storage drivers, you cannot pass a
 size less than the Default BaseFS Size.
 
-
 ### <a name="tmpfs"></a> Mount tmpfs (--tmpfs)
 
+The `--tmpfs` flag lets you create a `tmpfs` mount.
+
+The options that you can pass to `--tmpfs` are identical to the Linux `mount -t
+tmpfs -o` command. The following example mounts an empty `tmpfs` into the
+container with the `rw`, `noexec`, `nosuid`, `size=65536k` options.
+
 ```console
 $ docker run -d --tmpfs /run:rw,noexec,nosuid,size=65536k my_image
 ```
 
-The `--tmpfs` flag mounts an empty tmpfs into the container with the `rw`,
-`noexec`, `nosuid`, `size=65536k` options.
-
 ### <a name="volume"></a> Mount volume (-v)
 
 ```console

docs/reference/run.md

@@ -1130,21 +1130,6 @@ $ sleep 2; docker inspect --format='{{json .State.Health}}' test
 
 The health status is also displayed in the `docker ps` output.
 
-### TMPFS (mount tmpfs filesystems)
-
-```console
---tmpfs=[]: Create a tmpfs mount with: container-dir[:<options>],
-            where the options are identical to the Linux
-            'mount -t tmpfs -o' command.
-```
-
-The example below mounts an empty tmpfs into the container with the `rw`,
-`noexec`, `nosuid`, and `size=65536k` options.
-
-```console
-$ docker run -d --tmpfs /run:rw,noexec,nosuid,size=65536k my_image
-```
-
 ### Filesystem mounts
 
     -v, --volume=[host-src:]container-dest[:<options>]: Bind mount a volume.