Reworded titles of some clear how-to guides

Files retitled:

assert.rst
bash-completion.rst
capture.rst
existingtestsuite.rst
mark.rst
monkeypatch.rst
nose.rst
parametrize.rst
plugins.rst
skipping.rst
tmpdir.rst
usage.rst

doc/en/assert.rst

@@ -1,5 +1,5 @@
 
-The writing and reporting of assertions in tests
+How to write and report assertions in tests
 ==================================================
 
 .. _`assertfeedback`:

doc/en/bash-completion.rst

@@ -1,8 +1,8 @@
 
 .. _bash_completion:
 
-Setting up bash completion
-==========================
+How to set up bash completion
+=============================
 
 When using bash as your shell, ``pytest`` can use argcomplete
 (https://argcomplete.readthedocs.io/) for auto-completion.

doc/en/capture.rst

@@ -1,7 +1,7 @@
 
 .. _`captures`:
 
-Capturing of the stdout/stderr output
+How to capture stdout/stderr output
 =========================================================
 
 Default stdout/stderr/stdin capturing behaviour

doc/en/existingtestsuite.rst

@@ -1,7 +1,7 @@
 .. _existingtestsuite:
 
-Using pytest with an existing test suite
-===========================================
+How to use pytest with an existing test suite
+==============================================
 
 Pytest can be used with most existing test suites, but its
 behavior differs from other test runners such as :ref:`nose <noseintegration>` or

doc/en/mark.rst

@@ -1,7 +1,7 @@
 .. _mark:
 
-Marking test functions with attributes
-======================================
+How to mark test functions with attributes
+===========================================
 
 By using the ``pytest.mark`` helper you can easily set
 metadata on your test functions. You can find the full list of builtin markers

doc/en/monkeypatch.rst

@@ -1,5 +1,5 @@
 
-Monkeypatching/mocking modules and environments
+How to monkeypatch/mock modules and environments
 ================================================================
 
 .. currentmodule:: _pytest.monkeypatch

doc/en/nose.rst

@@ -1,6 +1,6 @@
 .. _`noseintegration`:
 
-Running tests written for nose
+How to run tests written for nose
 =======================================
 
 ``pytest`` has basic support for running tests written for nose_.

doc/en/parametrize.rst

@@ -6,7 +6,7 @@
 
 .. _`parametrize-basics`:
 
-Parametrizing fixtures and test functions
+How to parametrize fixtures and test functions
 ==========================================================================
 
 pytest enables test parametrization at several levels:

doc/en/plugins.rst

@@ -2,8 +2,8 @@
 .. _`extplugins`:
 .. _`using plugins`:
 
-Installing and Using plugins
-============================
+How to install and use plugins
+===============================
 
 This section talks about installing and using third party plugins.
 For writing your own plugins, please refer to :ref:`writing-plugins`.

doc/en/skipping.rst

@@ -2,8 +2,8 @@
 
 .. _skipping:
 
-Skip and xfail: dealing with tests that cannot succeed
-======================================================
+How to use skip and xfail to deal with tests that cannot succeed
+=================================================================
 
 You can mark test functions that cannot be run on certain platforms
 or that you expect to fail so pytest can deal with them accordingly and

doc/en/tmpdir.rst

@@ -2,8 +2,8 @@
 .. _`tmpdir handling`:
 .. _tmpdir:
 
-Temporary directories and files
-================================================
+How to use temporary directories and files in tests
+===================================================
 
 The ``tmp_path`` fixture
 ------------------------

doc/en/usage.rst

@@ -1,7 +1,7 @@
 
 .. _usage:
 
-Usage and Invocations
+How to invoke pytest
 ==========================================