cxx-qt-lib: Fix some doc comment syntax errors (#1161)

* cxx-qt-lib: Change current_date() to use the correct doc comment syntax

* cxx-qt-lib: Change to_be() to use the correct doc comment syntax

Author: redstrate

crates/cxx-qt-lib/src/core/qdate.rs

@@ -154,7 +154,7 @@ impl QDate {
         ffi::qdate_add_days(self, ndays)
     }
 
-    // Returns the current date, as reported by the system clock.
+    /// Returns the current date, as reported by the system clock.
     pub fn current_date() -> Self {
         ffi::qdate_current_date()
     }

crates/cxx-qt-lib/src/core/quuid.rs

@@ -219,7 +219,7 @@ impl QUuid {
     }
 
     /// Converts self to big endian from the target’s endianness.
-    // This function is analogous to [`u8::to_be`](https://doc.rust-lang.org/src/core/num/uint_macros.rs.html#399-431).
+    /// This function is analogous to [`u8::to_be`](https://doc.rust-lang.org/src/core/num/uint_macros.rs.html#399-431).
     ///
     /// On big endian this is a no-op. On little endian the bytes are swapped.
     ///