Apply suggestions from code review

Author: zerosnacks

src/StdMath.sol

@@ -30,7 +30,7 @@ library stdMath {
 
     function percentDelta(uint256 a, uint256 b) internal pure returns (uint256) {
         // Prevent division by zero
-        require(b != 0, "stdMath: percentDelta divisor is zero");
+        require(b != 0, "stdMath percentDelta(uint256,uint256): Divisor is zero");
         uint256 absDelta = delta(a, b);
 
         return absDelta * 1e18 / b;
@@ -40,7 +40,7 @@ library stdMath {
         uint256 absDelta = delta(a, b);
         uint256 absB = abs(b);
         // Prevent division by zero
-        require(absB != 0, "stdMath: percentDelta divisor is zero");
+        require(absB != 0, "stdMath percentDelta(int256,int256): Divisor is zero");
 
         return absDelta * 1e18 / absB;
     }