add DocumentationEst

src/estonian/DocumentationEst.gf

@@ -0,0 +1,6 @@
+--# -path=.:../abstract:../common
+
+-- documentation of Estonian in Estonian: the default introduced in LangEst
+
+concrete DocumentationEst of Documentation = CatEst ** 
+  DocumentationEstFunctor with (Terminology = TerminologyEst) ;