Slight documentation update for modules built upon a FiniteRankFreeModule

[egourgoulhon]

After #34424 (merged in Sage 9.7.rc0), the documentation of TensorFreeModule, ExtPowerFreeModule and ExtPowerDualFreeModule should say that these classes inherit from FiniteRankFreeModule_abstract, not FiniteRankFreeModule.

CC: @mkoeppe

Component: linear algebra

Keywords: tensor

Author: Eric Gourgoulhon

Branch/Commit: fbfb3e2

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/34792

[egourgoulhon]

Branch: public/manifolds/update_documentation_tensor-34792

[egourgoulhon]

New commits:

fbfb3e2

Update documentation for modules built upon a FiniteRankFreeModule (#34792)

[egourgoulhon]

Commit: fbfb3e2

[mkoeppe]

Reviewer: Matthias Koeppe

[egourgoulhon]

comment:4

Thank you!

[vbraun]

Changed branch from public/manifolds/update_documentation_tensor-34792 to fbfb3e2