README.md: update link to issues

Author: maxim-belkin

README.md

@@ -16,7 +16,7 @@ We'd like to ask you to familiarize yourself with our [Contribution Guide](CONTR
 the [more detailed guidelines][lesson-example] on proper formatting, ways to render the lesson locally, and even
 how to write new episodes.
 
-Please see the current list of [issues][FIXME] for ideas for contributing to this
+Please see the current list of [issues][issues] for ideas for contributing to this
 repository. For making your contribution, we use the GitHub flow, which is
 nicely explained in the chapter [Contributing to a Project](http://git-scm.com/book/en/v2/GitHub-Contributing-to-a-Project) in Pro Git
 by Scott Chacon.
@@ -39,3 +39,4 @@ To cite this lesson, please consult with [CITATION](CITATION)
 
 [lesson-example]: https://carpentries.github.io/lesson-example
 [maxim-belkin]: https://github.com/maxim-belkin
+[issues]: https://github.com/datacarpentry/python-ecology-lesson/issues

_extras/guide.md

@@ -731,10 +731,6 @@ plt.show()
 ~~~
 {: .language-python}
 
-## 09-working-with-sql
-
-FIXME
-
 
 [This page][matplotlib-mathtext] contains more information.