Fix typo in runfiles documentation

Resolve a typo in the example code of 'Tools depending on tools'

Closes #10352.

PiperOrigin-RevId: 283509899

site/docs/skylark/rules.md

diff --git a/site/docs/skylark/rules.md b/site/docs/skylark/rules.md
index b232963..08eb077 100644
--- a/site/docs/skylark/rules.md
+++ b/site/docs/skylark/rules.md
@@ -689,7 +689,7 @@
 ```python
 def _mytool_impl(ctx):
   ...
-  my_runfiles = ctx.runfles(files = mytool_files)
+  my_runfiles = ctx.runfiles(files = mytool_files)
   for subtool in ctx.attr.subtools:
     subtool_runfiles = subtool[DefaultInfo].default_runfiles
     my_runfiles = my_runfiles.merge(subtool_runfiles)