Remove extra trailing quote from exception message

[srstevenson]

• I have added an entry to docs/changelog.md

Summary of changes

Remove an extra trailing quote in the exception raised when a package is installed which does not contain an application but has dependencies that do.

Test plan

Tested by running pipx install scikit-learn.

Before:

% pipx install scikit-learn
Note: Dependent package 'numpy' contains 3 apps
  - f2py
  - f2py3
  - f2py3.10

No apps associated with package scikit-learn. Try again with '--include-deps' to include apps of dependent packages, which are listed above.
If you are attempting to install a library, pipx should not be used. Consider using pip or a similar tool instead."

After:

% pipx install scikit-learn
Note: Dependent package 'numpy' contains 3 apps
  - f2py
  - f2py3
  - f2py3.10

No apps associated with package scikit-learn. Try again with '--include-deps' to include apps of dependent packages, which are listed above.
If you are attempting to install a library, pipx should not be used. Consider using pip or a similar tool instead.