fix production emails location

src/common/email.py

@@ -7,7 +7,7 @@ link = 'https://ujonc.kszk.bme.hu/homework'
 
 
 def read_email(name):
-    with codecs.open('src/common/emails/' + name, 'r', 'utf-8') as myfile:
+    with codecs.open('common/emails/' + name, 'r', 'utf-8') as myfile:
         data = myfile.read()
     return data