Update FAQ.md

FAQ.md

@@ -443,7 +443,7 @@ If you get the following error
 [0] Received an Error in Communication: (-1) 0: ptsalloc: increase memory in input line:
 ```
 
-you can fix it by either  
+you can fix it by either    
 * increasing the memory line in the input file using the syntax described in the [Memory section](Memory.md) (e.g. `memory total 1000 mb`), or by  
 * recompiling the NWChem binary with the `getmem.nwchem` script as described in the section avaible at this 
 [link](Compiling-NWChem.md#setting-the-default-memory-values)