Fix links to extensions page.

README.md

@@ -17,7 +17,7 @@ selection of example notebooks, please follow the links from the
 
 In addition to the core pytket package there are pytket extension modules which allow pytket to interface with quantum devices and simulators. Some extensions also provide interoperability with other software libraries such as qiskit, cirq and pennylane.
 
-For a list of available pytket extensions see the [extensions index page](https://tket.quantinuum.com/extensions/).
+For a list of available pytket extensions see the [extensions index page](https://tket.quantinuum.com/api-docs/extensions).
 
 These extensions are installed as separate python packages and the source code for each extension lives in its own github repository.
 

pytket/docs/getting_started.rst

@@ -21,7 +21,7 @@ those using an older version of pytket, keep up to date by installing with the
 There are separate packages for managing the interoperability between pytket and
 other quantum software packages which can also be installed via PyPI. For
 details of these, see the
-`pytket extensions <https://tket.quantinuum.com/extensions/>`_ documentation.
+`pytket extensions <https://tket.quantinuum.com/api-docs/extensions>`_ documentation.
 
 
 The quantum circuit is an abstraction of computation using quantum resources,
@@ -72,7 +72,7 @@ for an extensive tutorial on pytket, providing a gentle introduction to its
 features and how to run circuits on backend devices, with worked examples.
 
 In pytket there is also a generic :py:class:`Backend` interface. This represents a connection to a quantum device or simulator.
-It's possible to run circuits on platforms from different providers through the `extension modules <https://tket.quantinuum.com/extensions/>`_.
+It's possible to run circuits on platforms from different providers through the `extension modules <https://tket.quantinuum.com/api-docs/extensions>`_.
 
 ::
 

pytket/docs/index.rst

@@ -2,7 +2,7 @@ pytket
 ======
 
 ``pytket`` is a python module for interfacing with tket, a quantum computing toolkit and optimising compiler developed by `Quantinuum`_. We currently support circuits and device architectures from
-`numerous providers <https://tket.quantinuum.com/extensions/>`_, allowing the
+`numerous providers <https://tket.quantinuum.com/api-docs/extensions>`_, allowing the
 tket tools to be used in conjunction with projects on their platforms.
 
 ``pytket`` is available for Python 3.9, 3.10 and 3.11, on Linux, MacOS and
@@ -38,7 +38,7 @@ To install the ``pytket-quantinuum`` package use the following command.
     pip install pytket-quantinuum
 
 The extensions supported by tket are described
-`here <https://tket.quantinuum.com/extensions/>`_.
+`here <https://tket.quantinuum.com/api-docs/extensions>`_.
 
 How to cite
 ~~~~~~~~~~~

pytket/package.md

@@ -16,7 +16,7 @@ To install the pytket extension modules add a hyphen and the extension name to t
 
 `` pip install pytket-quantinuum ``
 
-For a list of pytket extensions see this page: https://tket.quantinuum.com/extensions/.
+For a list of pytket extensions see this page: https://tket.quantinuum.com/api-docs/extensions.
 
 _Warning._ There is a [known issue](https://github.com/CQCL/tket/issues/926)
 with installing pytket in a conda environment on MacOS: you may not be able to