Spelling/grammar

Author: astrofrog

peps/pep-0771.rst

@@ -301,7 +301,7 @@ meaning that installing:
 
     $ pip install astropy
 
-would then also install optional but recommended dependencies such as
+would then install optional but recommended dependencies such as
 `scipy <https://www.scipy.org>`_. Advanced users who want a minimal install
 could then use:
 
@@ -396,9 +396,9 @@ support the ability for users to opt-in to non-default extras, without removing
 default extras. Essentially, they might want:
 
 * ``package[]`` to give an installation without any extras
-* ``package`` to install recommended dependencies (in a ``recommended`` extras)
-* ``package[alternative]`` to not install default extras, but to install an alternative set of optional dependencies (in an ``alternative`` extras)
-* ``package[additional]`` to install both recommended and additional dependencies (in an ``additional`` extras)
+* ``package`` to install recommended dependencies (in a ``recommended`` extra)
+* ``package[alternative]`` to not install default extras, but to install an alternative set of optional dependencies (in an ``alternative`` extra)
+* ``package[additional]`` to install both recommended and additional dependencies (in an ``additional`` extra)
 
 This could be achieved with e.g:
 
@@ -667,7 +667,7 @@ Avoiding the addition of many default dependencies
 
 One temptation for authors might be to include many dependencies by default since
 they can provide a way to opt out from these. We recommend however that authors
-carefully consider what is included by default to avoid unecessarily bloating
+carefully consider what is included by default to avoid unnecessarily bloating
 installations and complicating dependency trees. Using default extras does not
 mean that all extras need to be defaults, and there is still scope for users to
 explicitly opt in to non-default extras.