Fix command-line to "command line"

Author: alecbcs

tutorial_basics.rst

@@ -29,7 +29,7 @@ We will clone Spack and immediately check out the most recent release, v0.23.
    :language: console
 
 Next, add Spack to your path.
-Spack has some nice command-line integration tools, so instead of simply prepending to your ``PATH`` variable, source the Spack setup script.
+Spack has some nice command line integration tools, so instead of simply prepending to your ``PATH`` variable, source the Spack setup script.
 
 .. code-block:: console
 

tutorial_buildsystems.rst

@@ -114,7 +114,7 @@ Which is similar to invoking ``make`` in our Package
 
      make("foo")
 
-This is useful if we have packages that ignore environment variables and need a command-line argument.
+This is useful if we have packages that ignore environment variables and need a command line argument.
 
 Another thing to take note of is in the ``configure()`` method in ``AutotoolsPackage``.
 Here we see that the ``--prefix`` argument is already included since it is a common pattern amongst packages using ``Autotools``.
@@ -273,7 +273,7 @@ Let's change the build and install phases of our package:
    :linenos:
 
 Here we demonstrate another strategy that we can use to manipulate our package's build.
-We can provide command-line arguments to ``make()``.
+We can provide command line arguments to ``make()``.
 Since ``Bowtie`` can use ``tbb`` we can either add ``NO_TBB=1`` as a argument to prevent ``tbb`` support, or we can invoke ``make`` with no arguments if TBB is desired and found by its build system.
 
 ``Bowtie`` requires our ``install_target`` to provide a path to the install directory.

tutorial_scripting.rst

@@ -45,7 +45,7 @@ You can generate that output with the following command:
 
 Note that ``name``, ``version``, and ``hash`` are attributes of Spack's internal ``Spec`` object and enclosing them in braces ensures they are output according to your format string.
 
-Using ``spack find --format`` allows you to retrieve just the information you need to do things like pipe the output to typical UNIX command-line tools like ``sort`` or ``uniq``.
+Using ``spack find --format`` allows you to retrieve just the information you need to do things like pipe the output to typical UNIX command line tools like ``sort`` or ``uniq``.
 
 ^^^^^^^^^^^^^^^^^^^^^
 ``spack find --json``