Fix adolcmaterialtest.cc
The test erroneously checked for a small absolute error, but the numbers in this test are very large (around 1e8), so checking for a small relative error is more appropriate. This change makes the test pass.
The test erroneously checked for a small absolute error, but the numbers in this test are very large (around 1e8), so checking for a small relative error is more appropriate. This change makes the test pass.