C++: Minor edits

Author: calumgrant

cpp/ql/src/Telemetry/CompilerErrors.ql

@@ -9,4 +9,4 @@
 import Metrics
 
 from CppMetrics::ErrorCount m
-select m, m.getValue() as c order by c desc
+select m.toString(), m.getValue()

cpp/ql/src/Telemetry/DatabaseQuality.ql

@@ -9,4 +9,4 @@
 import Metrics
 
 from QualityMetric m
-select m, m.getValue() order by m
+select m.toString(), m.getValue()

cpp/ql/src/Telemetry/ExtractionMetrics.ql

@@ -9,4 +9,4 @@
 import Metrics
 
 from ExtractionMetric m
-select m, m.getValue() order by m
+select m.toString(), m.getValue()