tests: sensor: generic: Make test name consistent

By convention tests are using the name "drivers" and not "driver".

Signed-off-by: Flavio Ceolin <[email protected]>

Author: Flavio Ceolin

tests/drivers/sensor/generic/testcase.yaml

@@ -3,8 +3,8 @@ common:
     - qemu_x86
     - mps2_an385
 tests:
-  driver.sensor:
-    tags: driver sensor
-  driver.sensor.fpu:
+  drivers.sensor:
+    tags: drivers sensor
+  drivers.sensor.fpu:
     extra_args: CONF_FILE=prj_fpu.conf
-    tags: driver sensor
+    tags: drivers sensor