Description: remove UTF8 characters from README, makes the package FTBFS in pbuilder

--- a/README.rst
+++ b/README.rst
@@ -80,14 +80,14 @@ Helper methods are available to provide
 
     # 3600062594 is the OSM id of Chemnitz and is the bounding box for the request
     street = overpy.helper.get_street(
-        "Straße der Nationen",
+        "Strasse der Nationen",
         "3600062594"
     )
 
-    # this finds an intersection between Straße der Nationen and Carolastraße in Chemnitz
+    # this finds an intersection between Strasse der Nationen and Carolastrasse in Chemnitz
     intersection = overpy.helper.get_intersection(
-        "Straße der Nationen",
-        "Carolastraße",
+        "Strasse der Nationen",
+        "Carolastrasse",
         "3600062594"
     )