fix(native-decls): fix invalid operator in Lua examples

[Mathu-lmn]

Goal of this PR

This PR fixes 2 invalid Lua examples using === instead of ==, in Lua the strict '===' operator does not exists

How is this PR achieving the goal

By removing one "=" to achieve a correct check for invalid entity

This PR applies to the following area(s)

Native docs

Checklist

• Code compiles and has been tested successfully.
• Code explains itself well and/or is documented.
• My commit message explains what the changes do and what they are for.
• No extra compilation warnings are added by these changes.

[FabianTerhorst]

👍