doc: update entry because this feature is supported for geo_in_circle
doc: update entry because this feature is supported for geo_in_circle

Reported by Gurunavi, Inc. Thanks!!!

komainu8/groonga,komainu8/groonga,komainu8/groonga,groonga/groonga,cosmo0920/groonga,groonga/groonga,groonga/groonga,groonga/groonga,naoa/groonga,groonga/groonga,naoa/groonga,naoa/groonga,naoa/groonga,komainu8/groonga,groonga/groonga,komainu8/groonga,kenhys/groonga,naoa/groonga,naoa/groonga,kenhys/groonga,cosmo0920/groonga,cosmo0920/groonga,cosmo0920/groonga,kenhys/groonga,komainu8/groonga,naoa/groonga,naoa/groonga,cosmo0920/groonga,kenhys/groonga,groonga/groonga,komainu8/groonga,komainu8/groonga,kenhys/groonga,kenhys/groonga,groonga/groonga,kenhys/groonga,cosmo0920/groonga,cosmo0920/groonga,cosmo0920/groonga,kenhys/groonga