Minor spell check to installation instructions

docs/installation.txt

@@ -2,9 +2,10 @@
 Installation
 ============
 
-The lastes stable release of Tupak can be installed simply from
+The lastest stable release of Tupak can be `pip-installed
+<https://pypi.org/project/TUPAK/>`_ from
 
-.. code-block: console
+.. code-block:: console
 
    $ pip install tupak
 
@@ -50,7 +51,7 @@ Installing lalsuite
 -------------------
 
 For many gravitational-wave related examples you'll need access to the
-`lalsuite <https://wiki.ligo.org/DASWG/LALSuite>` tool set. These should be
+`lalsuite <https://wiki.ligo.org/DASWG/LALSuite>`_ tool set. These should be
 installed by default in the requirements. However, if you have problems with
 your installation, you can first try to install the simple way: