Fix typo in help for --cuda-parallel-hash switch

ethminer/MinerAux.h

@@ -600,7 +600,7 @@ public:
 			<< "        yield - Instruct CUDA to yield its thread when waiting for results from the device." << endl
 			<< "        sync  - Instruct CUDA to block the CPU thread on a synchronization primitive when waiting for the results from the device." << endl
 			<< "    --cuda-devices <0 1 ..n> Select which CUDA GPUs to mine on. Default is to use all" << endl
-			<< "    --cude-parallel-hash <1 2 ..8> Define how many hashes to calculate in a kernel, can be scaled to achive better performance. Default=4" << endl
+			<< "    --cuda-parallel-hash <1 2 ..8> Define how many hashes to calculate in a kernel, can be scaled to achive better performance. Default=4" << endl
 #endif
 			;
 	}