fix(lib): doom-exec-process use doom-print--format

The doom--format function was removed in fe16de6.

Amend: fe16de690418

Author: ivanbrennan

lisp/lib/process.el

@@ -31,7 +31,7 @@ Warning: freezes indefinitely on any stdin prompt."
             (set-process-filter
              process (lambda (_process output)
                        (princ output (current-buffer))
-                       (princ (doom--format output))))
+                       (princ (doom-print--format output))))
             (set-process-sentinel
              process (lambda (process _event)
                        (when (memq (process-status process) '(exit stop))