fix ruff failures on string formatting

Author: kkraus14

cuda_bindings/examples/4_CUDA_Libraries/conjugateGradientMultiBlockCG_test.py

@@ -230,13 +230,12 @@ def main():
     # This sample requires being run on a device that supports Cooperative Kernel
     # Launch
     if not deviceProp.cooperativeLaunch:
-        print("\nSelected GPU (%d) does not support Cooperative Kernel Launch, Waiving the run" % (devID))
+        print(f"\nSelected GPU {devID:%d} does not support Cooperative Kernel Launch, Waiving the run")
         return
 
     # Statistics about the GPU device
     print(
-        "> GPU device has %d Multi-Processors, SM %d.%d compute capabilities\n"
-        % (deviceProp.multiProcessorCount, deviceProp.major, deviceProp.minor)
+        f"> GPU device has {deviceProp.multiProcessorCount:%d} Multi-Processors, SM {deviceProp.major:%d}.{deviceProp.minor:%d} compute capabilities\n"
     )
 
     # Get kernel