keep historic version

src/doc/tutorials/errors.rst

@@ -16,11 +16,11 @@ following. For more information on specific error types, see also the
 
 .. note::
 
-   Starting from PyLinkAhead 0.5, the error handling has changed
+   Starting from PyCaosDB 0.5, the error handling has changed
    significantly. New error classes have been introduced and the
    behavior of ``TransactionError`` and ``EntityError`` has been
    re-worked. In the following, only the "new" errors are
-   discussed. Please refer to the documentation of PyLinkAhead 0.4.1 and
+   discussed. Please refer to the documentation of PyCaosDB 0.4.1 and
    earlier for the old error handling.
 
 LinkAheadException