'make htmldocs' does not use file doc/board/st/st.rst because the name matches the directory name. Let's rename it to st-dt.rst. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
@@ -6,5 +6,5 @@ STMicroelectronics
.. toctree::
:maxdepth: 2
- st
+ st-dt
stm32mp1