Fixup doxygen comment

Change-Id: I5ee292a4c408dc7ce368b2f078422ebce61dbf1f
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/27860
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
diff --git a/src/writer/spirv/builder.h b/src/writer/spirv/builder.h
index 0e4ff5e..a1d5f56 100644
--- a/src/writer/spirv/builder.h
+++ b/src/writer/spirv/builder.h
@@ -374,9 +374,9 @@
   /// @returns true if the vector was successfully generated
   bool GenerateVectorType(ast::type::VectorType* vec, const Operand& result);
 
-  // Converts ast image format to spv and pushes an appropriate capability.
-  // @returns SPIR-V image format type
-  // @param format AST image format type
+  /// Converts AST image format to SPIR-V and pushes an appropriate capability.
+  /// @param format AST image format type
+  /// @returns SPIR-V image format type
   SpvImageFormat convert_image_format_to_spv(
       const ast::type::ImageFormat format);