actions: footprint: fix csv formatting

Fix formatting of plan.txt CSV file and make it parseable by script.

Signed-off-by: Anas Nashif <[email protected]>

Author: nashif

scripts/footprint/plan.txt

@@ -14,7 +14,7 @@ footprints,power-management,it8xxx2_evb,tests/benchmarks/footprints,-DCONF_FILE=
 footprints,power-management,iotdk,tests/benchmarks/footprints,-DCONF_FILE=prj_pm.conf
 echo_client,default,frdm_k64f,samples/net/sockets/echo_client,
 echo_server,default,frdm_k64f,samples/net/sockets/echo_server,
-bt_beacon, default, nrf52840dk_nrf52840, samples/bluetooth/beacon
-bt_peripheral, default, nrf52840dk_nrf52840, samples/bluetooth/peripheral
-bt_central_hr, default, nrf52840dk_nrf52840, samples/bluetooth/central_hr
-bt_mesh_demo, default, bbc_microbit, samples/bluetooth/mesh_demo
+bt_beacon,default,nrf52840dk_nrf52840,samples/bluetooth/beacon,
+bt_peripheral,default,nrf52840dk_nrf52840,samples/bluetooth/peripheral,
+bt_central_hr,default,nrf52840dk_nrf52840,samples/bluetooth/central_hr,
+bt_mesh_demo,default,bbc_microbit,samples/bluetooth/mesh_demo,