fix quote

[craigbox]

unbreak lint with fancy quotes => ascii

[istio-policy-bot]

🤔 🐛 You appear to be fixing a bug in Go code, yet your PR doesn't include updates to any test files. Did you forget to add a test?

Courtesy of your friendly test nag.

[craigbox]

/test release-notes

[istio-testing]

In response to a cherrypick label: #3359 failed to apply on top of branch "release-1.24":

Applying: fix quote
Using index info to reconstruct a base tree...
M	mesh/v1alpha1/config.pb.go
M	mesh/v1alpha1/config.proto
M	mesh/v1alpha1/istio.mesh.v1alpha1.pb.html
Falling back to patching base and 3-way merge...
Auto-merging mesh/v1alpha1/istio.mesh.v1alpha1.pb.html
CONFLICT (content): Merge conflict in mesh/v1alpha1/istio.mesh.v1alpha1.pb.html
Auto-merging mesh/v1alpha1/config.proto
Auto-merging mesh/v1alpha1/config.pb.go
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config advice.mergeConflict false"
Patch failed at 0001 fix quote

[istio-testing]

In response to a cherrypick label: new issue created for failed cherrypick: #3390