fixed double label HTML validation error
fixed double label HTML validation error

Change-Id: I68c2fd4b82ff8a520ca466f499e3cb4ecefe4552
Reviewed-on: http://review.couchbase.org/8873
Reviewed-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>

ceejatec/ns_server,vzasade/ns_server,nimishzynga/ns_server,ceejatec/ns_server,membase/ns_server,vzasade/ns_server,pavel-blagodov/ns_server,vzasade/ns_server,daverigby/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,t3rm1n4l/ns_server,ceejatec/ns_server,daverigby/ns_server,nimishzynga/ns_server,membase/ns_server,daverigby/ns_server,membase/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,ceejatec/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,ceejatec/ns_server,ceejatec/ns_server,mschoch/ns_server,membase/ns_server,t3rm1n4l/ns_server,membase/ns_server,membase/ns_server,daverigby/ns_server,mschoch/ns_server,pavel-blagodov/ns_server,mschoch/ns_server,mschoch/ns_server,pavel-blagodov/ns_server,vzasade/ns_server,mschoch/ns_server,daverigby/ns_server,pavel-blagodov/ns_server,nimishzynga/ns_server,mschoch/ns_server