Fix typo

Change-Id: I4d1f652759ca65f15894c290ea5e77fb206701cb
Reviewed-on: https://gerrit.libreoffice.org/70334
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

chart2/source/view/axes/Tickmarks.cxx

@@ -95,7 +95,7 @@ TickFactory::TickFactory(
     if( m_rScale.Scaling.is() )
     {
         m_xInverseScaling = m_rScale.Scaling->getInverseScaling();
-        OSL_ENSURE( m_xInverseScaling.is(), "each Scaling needs to return a inverse Scaling" );
+        OSL_ENSURE( m_xInverseScaling.is(), "each Scaling needs to return an inverse Scaling" );
     }
 
     m_fScaledVisibleMin = m_rScale.Minimum;