Fix minor typo
Closes
@@ -296,7 +296,7 @@ dependencies](https://github.com/bazelbuild/bazel/blob/5cfa0303d6ac3b5bd031ff602
in an internal
[`distdir_tar`](https://github.com/bazelbuild/bazel/blob/5cfa0303d6ac3b5bd031ff60272ce80a704af8c2/distdir.bzl#L44).
-However, bazel allows the exeuction of arbitrary commands in repository rules,
+However, bazel allows the execution of arbitrary commands in repository rules,
without knowing if they call out to the network. Therefore, bazel has no option
to enforce builds being fully offline. So testing if a build works correctly
offline requires external blocking of the network, as bazel does in its
