[docs] add citation instructions to website

docs/getting_started/citation.rst

@@ -0,0 +1,24 @@
+Citing splinebox
+================
+
+If you use splinebox in the context of scientific publication, please cite it as follows.
+Note, that you will have to fill in the version yourself. If you are unsure what version you are running,
+you can find out by running
+
+.. code-block:: python
+
+   import splinebox
+   print(splinbox.__version__)
+
+BibTeX:
+
+.. code-block::
+
+   @misc{splinebox,
+     author = {Aymanns, Florian and Andò, Edward and Uhlmann, Virginie},
+     title = {{S}pline{B}ox},
+     url = {https://pypi.org/project/splinebox/},
+     doi = {10.5281/zenodo.13358354},
+     note = {{V}ersion V.V.Vb1},
+     year = 2024,
+   }

docs/getting_started/index.rst

@@ -6,6 +6,7 @@ Getting Started
    :hidden:
 
    padding.rst
+   citation.rst
 
 Installation
 ------------

docs/getting_started/padding.rst

@@ -27,7 +27,7 @@ By padding with two additional points on the circle, this behavior is corrected.
 When you directly set control points for a spline, you must handle the padding yourself.
 This design choice allows full control over the spline's behavior at the ends.
 
-.. code-block::
+.. code-block:: python
 
    spline = splinebox.Spline(M=5, basis_function=splinebox.B3(), closed=False)
    spline.control_points = np.random.rand((7, ndim))