fix typo in MCP[2,3,4]raw keys

Load.py

@@ -162,19 +162,19 @@ mnemonics = {
                 'key':'digitizers.channel_1_C.apd.pulseIntegral',
                 'dim':['apdId']},
     "MCP2raw": {'source':'SCS_UTC1_ADQ/ADC/1:network',
-                'key':'digitizers.channel_1_D.raw.samples',
+                'key':'digitizers.channel_1_C.raw.samples',
                 'dim':['samplesId']},
     "MCP3apd": {'source':'SCS_UTC1_ADQ/ADC/1:network',
                 'key':'digitizers.channel_1_B.apd.pulseIntegral',
                 'dim':['apdId']},
     "MCP3raw": {'source':'SCS_UTC1_ADQ/ADC/1:network',
-                'key':'digitizers.channel_1_D.raw.samples',
+                'key':'digitizers.channel_1_B.raw.samples',
                 'dim':['samplesId']},
     "MCP4apd": {'source':'SCS_UTC1_ADQ/ADC/1:network',
                 'key':'digitizers.channel_1_A.apd.pulseIntegral',
                 'dim':['apdId']},
     "MCP4raw": {'source':'SCS_UTC1_ADQ/ADC/1:network',
-                'key':'digitizers.channel_1_D.raw.samples',
+                'key':'digitizers.channel_1_A.raw.samples',
                 'dim': ['samplesId']},
 
     # KARABACON