chore: fix invalid tag in MeshHTTPRoute examples

[kleinfreund]

Fix a few invalid examples using invalid tag syntax (v1/experimental -> "tag value must consist of alphanumeric characters, dots, dashes and underscores").

Signed-off-by: Philipp Rudloff philipp.rudloff@konghq.com

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[kleinfreund]

No idea why the link checker fails. 🤷🏻