Add Patryk to the about.

Author: kellertuer

docs/src/about.md

@@ -15,6 +15,7 @@ Thanks to the following contributors to `Manopt.jl`:
 * Mathias Ravn Munkvold contributed most of the implementation of the [Adaptive Regularization with Cubics](solvers/adaptive-regularization-with-cubics.md) solver as well as its [Lanczos](@ref arc-Lanczos) subsolver
 * [Sander Engen Oddsen](https://github.com/oddsen) contributed to the implementation of the [LTMADS](solvers/mesh_adaptive_direct_search.md) solver.
 * [Jonas Püschel](https://www.uni-augsburg.de/de/fakultaet/mntf/math/prof/numa/team/jonas-pueschel/) contributed [restart rules for the conjugate gradient solver](@ref cg-restart).
+* [Patryk Przybysz](https://www.linkedin.com/in/patryk-przybysz-5644aa1a1/) contributed to the [Generalized Cauchy Direection](solvers/generalized_cauchy_direction_subsolver.md)
 * [Tom-Christian Riemer](https://www.tu-chemnitz.de/mathematik/wire/mitarbeiter.php) implemented the [trust regions](solvers/trust_regions.md) and [quasi Newton](solvers/quasi_Newton.md) solvers as well as the [truncated conjugate gradient descent](solvers/truncated_conjugate_gradient_descent.md) subsolver.
 * [Markus A. Stokkenes](https://www.linkedin.com/in/markus-a-stokkenes-b41bba17b/) contributed most of the implementation of the [Interior Point Newton Method](solvers/interior_point_Newton.md) as well as its default [Conjugate Residual](solvers/conjugate_residual.md) subsolver
 * [Laura Weigl](https://num.math.uni-bayreuth.de/en/team/laura-weigl/index.php) implemented the [Vector bundle Newton Method](solvers/vectorbundle_newton.md).