[NFC][lldb] fix extra line after documentation (#149482)

Formatting patch which removes an extra line after a docstring.

lldb/include/lldb/Utility/Stream.h

@@ -270,7 +270,6 @@ public:
   /// \param[in] suffix
   ///     The ANSI color code to end colorization. This is
   ///     environment-dependent.
-
   void PutCStringColorHighlighted(
       llvm::StringRef text,
       std::optional<HighlightSettings> settings = std::nullopt);