Fix trailing whitespace

Co-authored-by: Andrew Myers <[email protected]>

Docs/sphinx_documentation/source/Debugging.rst

@@ -27,7 +27,7 @@ use of uninitialized values, AMReX also initializes ``FArrayBox``\ s in
 ``MulitFab``\ s and arrays allocated by ``bl_allocate`` to signaling NaNs when it is compiled
 with ``TEST=TRUE`` or ``DEBUG=TRUE`` in GNU make, or with ``-DCMAKE_BUILD_TYPE=Debug`` in CMake.
 One can also control the setting for ``FArrayBox`` using the runtime parameter, ``fab.init_snan``.
-Note for Macs, M1 and M2 chips using Arm64 architecture are not able to trap division by zero.  
+Note for Macs, M1 and M2 chips using Arm64 architecture are not able to trap division by zero.
 
 One can get more information than the backtrace of the call stack by
 instrumenting the code.  Here is an example.