Update comment

Author: savannahostrowski

Makefile.pre.in

@@ -3155,7 +3155,7 @@ JIT_STENCIL_HEADER = jit_stencils-x86_64-pc-windows-msvc.h
 else ifneq ($(filter x86_64-unknown-linux-gnu,$(HOST_GNU_TYPE)),)
 JIT_STENCIL_HEADER = jit_stencils-x86_64-unknown-linux-gnu.h
 else
-$(error "Unsupported host triple: $(HOST_GNU_TYPE). Please update the Makefile to support this host triple.")
+$(error "Unsupported host triple: $(HOST_GNU_TYPE).")
 endif
 
 Python/jit.o: $(srcdir)/Python/jit.c jit_stencils.h $(JIT_STENCIL_HEADER)