Update nitrogen-96-board.rst

documentation/source/quick-start/nitrogen-96-board.rst

@@ -124,7 +124,7 @@ As described by `pyOCD issue 259 <https://github.com/pyocd/pyOCD/issues/259>`_,
 
 To fix the above error, add the udev rule shown in the previous section and install a more recent version of pyOCD.
 
-Flashing an Application to 96Boards Nitrogen
+Building an Application to 96Boards Nitrogen
 ********************************************
 
 Here is an example for the `Hello World application <https://docs.zephyrproject.org/latest/samples/hello_world/README.html#hello-world>`_.