Update Supported FRITZ!Boxes

- Update README.md
  - add FRITZ!Box 7530 with FRITZ!OS 8.00

Author: phipzzz

README.md

@@ -115,11 +115,12 @@ It is also possible to run the application without Docker, but this requires man
 Following FRITZ!Boxes were tested successfully. Feel free to add further ones. I guess almost all current models will work but they haven't been tested so far.
 
 -   **FRITZ!Box 7590 AX**
+    -   FRITZ!OS 8.00
 
+-   **FRITZ!Box 7530**
     -   FRITZ!OS 8.00
 
 -   **FRITZ!Box 7490**
-
     -   FRITZ!OS 7.59
     -   FRITZ!OS 7.57