Fix documentation to use the appropriate term for flags
Fix documentation to use the appropriate term for flags

Although checking for the existence of flags yields a boolean value,
flags can't be true, they are either set or not set.

jwendell/libsoup,fanc999/libsoup,ahmedammar/platform_external_gst_libsoup,Distrotech/libsoup,fanc999/libsoup,ahmedammar/platform_external_gst_libsoup,jwendell/libsoup,Distrotech/libsoup,jwendell/libsoup,ahmedammar/platform_external_gst_libsoup,fanc999/libsoup,fanc999/libsoup,Distrotech/libsoup,jwendell/libsoup,jwendell/libsoup,Distrotech/libsoup,fanc999/libsoup,Distrotech/libsoup