Fix a typo in getargs.c

intrepreter -> interpreter

ncd/modules/getargs.c

@@ -32,7 +32,7 @@
  *   getargs()
  * 
  * Variables:
- *   (empty) - list of extra command line arguments that were passed to the intrepreter
+ *   (empty) - list of extra command line arguments that were passed to the interpreter
  */
 
 #include <string.h>