According to the docutils reference manual, the rule for lines is:

  "The underline/overline must be at least as long as the title text."

As some headlines have autogenerated names and we don't know the exact
lengths, make the underlines significantly longer, in order to make the
warning go away.

Signed-off-by: Robert Schwebel <r.schwe...@pengutronix.de>
---
 doc/environment.rst   | 2 +-
 doc/user_adapting.inc | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/environment.rst b/doc/environment.rst
index ad03a3dfc..9fd89c433 100644
--- a/doc/environment.rst
+++ b/doc/environment.rst
@@ -496,7 +496,7 @@ use the *toolchain* parameter to define the toolchain to be 
used on a
 per project base.
 
 Building the OSELAS.Toolchain for |ptxdistBSPName|
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Do the following steps in your own home directory ($HOME). The final
 OSELAS.Toolchain gets installed to ``opt/``, but must **never** be
diff --git a/doc/user_adapting.inc b/doc/user_adapting.inc
index ed6732305..a0dbb3b49 100644
--- a/doc/user_adapting.inc
+++ b/doc/user_adapting.inc
@@ -1,5 +1,5 @@
 Adapting the |ptxdistBSPName| Project
--------------------------------------
+---------------------------------------------------------------------------------------------------------------------------------------------------------------
 
 Handling a fully prepared PTXdist project is easy. But everything is
 fixed to the settings the developer selected. We now want to adapt the
-- 
2.11.0


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