This is a fix for #464 so the correct parameters are used in the Wikipedia API call.
I also changed the API call so it only returns the main summary. Often long Wikipedia entries contain table of contents, etc. that look odd in a single block of text. The API 'extract' call lets us just get the main summary at the top of the Wikipedia entry. This means it will be shorter, but probably more meaningful.
This is a fix for #464 so the correct parameters are used in the Wikipedia API call.
I also changed the API call so it only returns the main summary. Often long Wikipedia entries contain table of contents, etc. that look odd in a single block of text. The API 'extract' call lets us just get the main summary at the top of the Wikipedia entry. This means it will be shorter, but probably more meaningful.