fix link to docs

README.md

@@ -17,7 +17,7 @@ pip install felupe[all]
 where `[all]` installs all optional dependencies. By default, FElupe does not require `numba` and `sparse`. In order to make use of all features of FElupe, it is suggested to install all optional dependencies.
 
 # Hello, FElupe!
-A quarter model of a solid cube with hyperelastic material behavior is subjected to a uniaxial elongation applied at a clamped end-face. This involves the creation of a mesh, a region and a displacement field. Furthermore, the boundary conditions are created by a template for a uniaxial loadcase. The material behavior is defined through a FElupe-built-in Neo-Hookean material formulation. Inside a Newton-Rhapson procedure, the internal force vector and the tangent stiffness matrix are generated by assembling both linear and bilinear forms of static equilibrium. Finally, the solution of the incremental displacements is calculated und updated until convergence is reached. For more details beside this high-level code snippet, please have a look at the [documentation](https://readthedocs.org/projects/felupe/badge/?version=latest).
+A quarter model of a solid cube with hyperelastic material behavior is subjected to a uniaxial elongation applied at a clamped end-face. This involves the creation of a mesh, a region and a displacement field. Furthermore, the boundary conditions are created by a template for a uniaxial loadcase. The material behavior is defined through a FElupe-built-in Neo-Hookean material formulation. Inside a Newton-Rhapson procedure, the internal force vector and the tangent stiffness matrix are generated by assembling both linear and bilinear forms of static equilibrium. Finally, the solution of the incremental displacements is calculated und updated until convergence is reached. For more details beside this high-level code snippet, please have a look at the [documentation](https://felupe.readthedocs.io/en/latest/?badge=latest).
 
 ```python
 import felupe as fe