std/math/big: refactor documentation

std/math/big/int.jule

@@ -787,10 +787,10 @@ impl Int {
 		ret len(self.abs) > 0 && self.abs[0]&1 == 0
 	}
 
-	// Sign returns, x = self:
-	//   - -1 if x < 0;
-	//   - 0 if x == 0;
-	//   - +1 if x > 0.
+	// Returns, x = self:
+	//	Sign() = -1 if x < 0
+	//	Sign() = 0 if x == 0
+	//	Sign() = +1 if x > 0
 	fn Sign(self): int {
 		// This function is may used in cryptographic operations. It must not leak
 		// anything but the Int's sign and bit size through side-channels. Any

std/math/big/wordconv.jule

@@ -13,7 +13,7 @@ const digits = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 // Note: MaxBase = len(digits), but it must remain an untyped rune constant
 //       for API compatibility.
 
-// MaxBase is the largest number base accepted for string conversions.
+// The largest number base accepted for string conversions.
 const MaxBase = 10 + ('z' - 'a' + 1) + ('Z' - 'A' + 1)
 const maxBaseSmall = 10 + ('z' - 'a' + 1)