tests: zephyr: fix GH actions issues

Fixed few too long comments detected by GH Action job.

Signed-off-by: Bartlomiej Buczek <bartlomiej.buczek@nordicsemi.no>

Author: nordic-babu

tests/zephyr/boards/nrf/i2c/i2c_slave/boards/nrf54lc10dk_nrf54lc10a_cpuapp.overlay

@@ -1,5 +1,6 @@
 /*
- * Two loopbacks are required (nRF54LC10 DK: avoid P1.8 — button2 / GRTC fast clock; P1.9 — button1):
+ * Two loopbacks are required
+ * (nRF54LC10 DK: avoid P1.8 — button2 / GRTC fast clock; P1.9 — button1):
  * P1.11 - P1.13 (SDA)
  * P1.12 - P1.14 (SCL)
  */

tests/zephyr/drivers/timer/nrf_grtc_timer/boards/nrf54lc10dk_nrf54lc10a_cpuapp.overlay

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
-/* Aligned with zephyr/tests/drivers/timer/nrf_grtc_timer/boards/nrf54l15dk_nrf54l15_cpuapp.overlay */
+/* Aligned with nrf54l15dk_nrf54l15_cpuapp.overlay */
 
 &grtc {
 	interrupts = <228 2>;

tests/zephyr/drivers/timer/nrf_grtc_timer/boards/nrf54lc10dk_nrf54lc10a_cpuflpr.overlay

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
-/* Aligned with zephyr/tests/drivers/timer/nrf_grtc_timer/boards/nrf54l15dk_nrf54l15_cpuflpr.overlay */
+/* Aligned with nrf54l15dk_nrf54l15_cpuflpr.overlay */
 
 &grtc {
 	/*interrupts = <226 2>;*/