minor orthographic update

Author: dom

docs/developer/developer.adoc

@@ -98,11 +98,11 @@ $ cmake ../
 $ make
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-On Ubuntu 18.04 and potentially other distro, the python3 install path is wrong.
+On Ubuntu 18.04 and potentially other distro, the python3 dist-packages path is wrong.
 If the following command:
 
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-$ python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib(True))"
+$ python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())"
 ----
 
 return "/usr/local/lib/python3/dist-packages" instead of a path like