Updated file scope Doxygen comments for vtr_optional.h to fix problem with VTRUTIL API web documentation having vtr_optional info embedded in many places.

Vaughn Betz · Vaughn Betz · commit b9760a966547 · 2024-09-24T21:16:46.000-04:00
diff --git a/libs/libvtrutil/src/vtr_optional.h b/libs/libvtrutil/src/vtr_optional.h
@@ -1,6 +1,8 @@
 #pragma once
 
-/** std::optional-like interface with optional references.
+/** 
+ * @file
+ * @brief std::optional-like interface with optional references.
  * currently: import TartanLlama's optional into the vtr namespace
  * documentation at https://tl.tartanllama.xyz/en/latest/api/optional.html
  * there are three main uses of this:
