Add newline before DETAIL and HINT

Author: jyn514

tokio-postgres/src/error/mod.rs

@@ -311,10 +311,10 @@ impl fmt::Display for DbError {
     fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(fmt, "{}: {}", self.severity, self.message)?;
         if let Some(detail) = &self.detail {
-            write!(fmt, "DETAIL: {}", detail)?;
+            write!(fmt, "\nDETAIL: {}", detail)?;
         }
         if let Some(hint) = &self.hint {
-            write!(fmt, "HINT: {}", hint)?;
+            write!(fmt, "\nHINT: {}", hint)?;
         }
         Ok(())
     }