Fix typos in installation instructions and dependencies

Author: partev

docs/index.rst

@@ -26,7 +26,7 @@ or sequential Monte Carlo (SMC)).
 Installation and Testing
 ------------------------
 
-To install the latest releast of dynamax from PyPi:
+To install the latest release of dynamax from PyPI:
 
 .. code-block:: console
 
@@ -242,8 +242,8 @@ Related Libraries
 * hmmlearn_: Numpy / C++ library for HMMs
 * linderman-ssm-jax_:  JAX library for SSMs (replaced by dynamax)
 * linderman-ssm-numpy_:  Numpy / numba / autograd library for SSMs  (replaced by dynamax)
-* mattjj-pyhsmm_:  Numpy / Cython library library for HMMs
-* mattjj-pylds_:  Numpy / Cython library library for linear dynamical systems
+* mattjj-pyhsmm_:  Numpy / Cython library for HMMs
+* mattjj-pylds_:  Numpy / Cython library for linear dynamical systems
 * pgm-jax_: JAX library for factor graphs
 * JSL_: JAX library for SSMs (replaced by dynamax)
 * pykalman_: Numpy library for (extended) Kalman filtering