make doc_string examples order-independent by removing np.set_printoptions #7361
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Fix the pytest-randomly tests in networkx/linalg which started occasionally failing due to a new doc_string test that changed the print setting for numpy arrays. The printoptions were set to print 4 digits for array values. Luckily the example still fits in the code width using the standard 8 digits.
So this fix just removes the line that sets the numpy print options and expands the example to show 8 digits.
This should go in before v3.3