Fix header in local connection External API Key docs example

[TJaniF]

What's being changed:

Just a one line change in the External API keys example, changing the headers key from X-OpenAI-Api to X-OpenAI-Api-key.

With the current header key I get the following error:

WeaviateQueryError: Query call with protocol GRPC search failed with message explorer: get class: vectorize params:
 vectorize params: vectorize params: vectorize keywords: remote client vectorize: API Key: no api key found neither in
  request header: X-Openai-Api-Key nor in environment variable under OPENAI_APIKEY.

My connection works with the changed header :)

Type of change:

• Documentation updates (non-breaking change to fix/update documentation)

How Has This Been Tested?

• not tested

[daveatweaviate]

Thanks for your suggestion @TJaniF !

Have you accepted the contributor agreement? Please let us know that you've accepted the agreement, and then I can merge in your update.

Thanks again

[TJaniF]

Thanks for your suggestion @TJaniF !

Have you accepted the contributor agreement? Please let us know that you've accepted the agreement, and then I can merge in your update.

Thanks again

Yes, I accept the agreement :)

[daveatweaviate]

Thanks @TJaniF!

We really appreciate your contribution, and wish you success with your project.