Assign an image to each lesson

Author: Saeid Darvish

…ecorator‌-generator-coroutine-lambda.jpg …decorator-generator-coroutine-lambda.jpg_static/pages/13-python-function-decorator‌-generator-coroutine-lambda.jpg renamed to _static/pages/13-python-function-decorator-generator-coroutine-lambda.jpg _static/pages/13-python-function-decorator‌-generator-coroutine-lambda.jpg renamed to _static/pages/13-python-function-decorator-generator-coroutine-lambda.jpg

@@ -8,7 +8,7 @@
 درس ۱۳: تابع در پایتون: Coroutine ،Generator ،Decorator‌ و lambda
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-.. figure:: /_static/pages/13-python-function-decorator‌-generator-coroutine-lambda.jpg
+.. figure:: /_static/pages/13-python-function-decorator-generator-coroutine-lambda.jpg
     :align: center
     :alt: تابع در پایتون: Coroutine ،Generator ،Decorator‌ و lambda