fix typo

Author: coke

doc/Type/IO.pod6

@@ -316,7 +316,7 @@ C<False>.
 Runs an external command without involving a shell (if possible).
 
     run ‚touch‘, ‚>foo.txt‘; # no shell redirect (as there is no shell)
-    shell ‚ls \>*‘; # the shell would redirect, hance the backslash and the glob is expanded
+    shell ‚ls \>*‘; # the shell would redirect, hence the backslash and the glob is expanded
     run Q:w{rm >foo.txt}; # again no redirect but with a list word quote
     # OUTPUT: «>foo.txt»