Fixed error in aggregation API example
Fixed error in aggregation API example

SpaceProxy and class with extension methods does not have Query(string
params) method.

kemiz/gigaspaces-wiki-jekyll,barakb/gigaspaces-wiki-jekyll,hagaiGS/gigaspaces-wiki-jekyll,kemiz/gigaspaces-wiki-jekyll,kemiz/gigaspaces-wiki-jekyll,hagaiGS/gigaspaces-wiki-jekyll,barakb/gigaspaces-wiki-jekyll,hagaiGS/gigaspaces-wiki-jekyll,yohanakh/gigaspaces-wiki-jekyll,yohanakh/gigaspaces-wiki-jekyll,hagaiGS/gigaspaces-wiki-jekyll,yohanakh/gigaspaces-wiki-jekyll,barakb/gigaspaces-wiki-jekyll,kemiz/gigaspaces-wiki-jekyll,kemiz/gigaspaces-wiki-jekyll,barakb/gigaspaces-wiki-jekyll,yohanakh/gigaspaces-wiki-jekyll