Update README_de.md

Author: huhuhang

README_de.md

@@ -12,9 +12,9 @@ Python ist eine vielseitige, hochgradige Programmiersprache. Dieser Skill Tree b
 
 | Index | Name | Schwierigkeit | Repo | Übung |
 |---------|--------------------------------------------------------------------------------------------------------|-----------------|----------------------------------------------------------------------|-----------------------------------------------------------------------------|
-| 1 | [Schnellstart mit Python](https://labex.io/de/courses/quick-start-with-python) | ★☆☆  | [🔗 Repo](https://github.com/labex-labs/quick-start-with-python) | [🚀 Labor Starten](https://labex.io/de/courses/quick-start-with-python) |
-| 2 | [Die Fortgeschrittene Python - Meisterschaft](https://labex.io/de/courses/the-advanced-python-mastery) | ★★★  | [🔗 Repo](https://github.com/labex-labs/the-advanced-python-mastery) | [🚀 Labor Starten](https://labex.io/de/courses/the-advanced-python-mastery) |
-| 3 | [Python Übungsherausforderungen](https://labex.io/de/courses/python-practice-challenges) | ★☆☆  | [🔗 Repo](https://github.com/labex-labs/python-practice-challenges) | [🚀 Labor Starten](https://labex.io/de/courses/python-practice-challenges) |
+| 1 | [Schnellstart mit Python](https://labex.io/de/courses/quick-start-with-python) | Anfänger | [🔗 Repo](https://github.com/labex-labs/quick-start-with-python) | [🚀 Labor Starten](https://labex.io/de/courses/quick-start-with-python) |
+| 2 | [Die Fortgeschrittene Python - Meisterschaft](https://labex.io/de/courses/the-advanced-python-mastery) | Experte | [🔗 Repo](https://github.com/labex-labs/the-advanced-python-mastery) | [🚀 Labor Starten](https://labex.io/de/courses/the-advanced-python-mastery) |
+| 3 | [Python Übungsherausforderungen](https://labex.io/de/courses/python-practice-challenges) | Anfänger | [🔗 Repo](https://github.com/labex-labs/python-practice-challenges) | [🚀 Labor Starten](https://labex.io/de/courses/python-practice-challenges) |
 
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