Update SUMMARY.md

Author: Eleng555

SUMMARY.md

@@ -22,7 +22,7 @@
    * [55 - Python Basics 6](055-python-basics-6.md)
    * [60 - A000045.txt](060-a000045-txt.md)
    * [60 - Stegosaurus](060-stegosaurus.md)
-   * [60 - Python Basics 7 (TODO)](060-python-basics-7.md)
+   * [60 - Python Basics 7](060-python-basics-7.md)
    * [60 - Cookiezi Fanpage](060-cookiezi-fanpage.md)
    * [60 - Format Deception](060-format_deception.md)
    * [60 - Flowchart (TODO)](060-flowchart.md)