fix(types): fix NumericError message causing test failures

The error message for NumericError::Overflow had an extra space between "a" and "value",
which was causing unexpected test failures due to string comparison mismatches.
This commit removes the extra space to ensure error messages match expected test outputs.

Author: nervana21

types/src/lib.rs

@@ -73,7 +73,7 @@ impl fmt::Display for NumericError {
 
         match *self {
             Negative{ ref field, value } => write!(f, "expected an unsigned numeric value however the value was negative (field name: {} value: {})", field, value),
-            Overflow { ref field, value } => write!(f, "a  value larger than `u32::MAX` was unexpectedly encountered (field name: {} Value: {})", field, value),
+            Overflow { ref field, value } => write!(f, "a value larger than `u32::MAX` was unexpectedly encountered (field name: {} Value: {})", field, value),
         }
     }
 }