Update FLS MIT License header underline to fit length of content

PLeVasseur · web-flow · commit c471a0905e16 · 2025-03-19T13:45:42.000-04:00
diff --git a/src/appendices/licenses.rst b/src/appendices/licenses.rst
@@ -87,7 +87,7 @@ limitations under the License.
 
 
 Ferrocene Specification MIT License
---------------------------
+-----------------------------------
 
 **Copyright (c) The Ferrocene Developers**
 
