doc: nrfconnect: fix link and image

[greg-fer]

Fixed link and image in nrfconnect_android_commissioning.md.

Problem

Inconsistent image and link are breaking documentation build for nrfconnect.

Change overview

Align linking and figure inclusion with other guides.

Testing

Doc change only. No testing.

Signed-off-by: Grzegorz Ferenc Grzegorz.Ferenc@nordicsemi.no

[github-actions]

Size increase report for "esp32-example-build" from 948dd7b

File	Section	File	VM
chip-bridge-app.elf	.flash.text	48	48
chip-temperature-measurement-app.elf	.flash.text	-60	-60

Full report output

BLOAT REPORT

Files found only in the build output:
    report.csv

Comparing ./master_artifact/chip-bridge-app.elf and ./pull_artifact/chip-bridge-app.elf:

sections,vmsize,filesize
.flash.text,48,48
[Unmapped],0,-48

Comparing ./master_artifact/chip-lock-app.elf and ./pull_artifact/chip-lock-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-pigweed-app.elf and ./pull_artifact/chip-pigweed-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-shell.elf and ./pull_artifact/chip-shell.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-all-clusters-app.elf and ./pull_artifact/chip-all-clusters-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-temperature-measurement-app.elf and ./pull_artifact/chip-temperature-measurement-app.elf:

sections,vmsize,filesize
[Unmapped],0,60
.flash.text,-60,-60

Comparing ./master_artifact/chip-persistent-storage.elf and ./pull_artifact/chip-persistent-storage.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-ipv6only-app.elf and ./pull_artifact/chip-ipv6only-app.elf:

sections,vmsize,filesize