Update metric.graphqls

Fix wrong type Long

metric.graphqls

@@ -50,7 +50,7 @@ type Thermodynamic {
     # Example:
     # [ [0, 0, 10], [0, 1, 43], ...]
     # These ^^^ two represent the left bottom element, and another element above it.
-    nodes: [[Long]!]!
+    nodes: [[Int]!]!
     axisYStep: Int!
 }
 
@@ -58,4 +58,4 @@ type Thermodynamic {
 extend type Query {
     getLinearIntValues(metric: MetricCondition!, duration: Duration!): LinearIntValues
     getThermodynamic(metric: MetricCondition!, duration: Duration!): Thermodynamic
-}
\ No newline at end of file
+}