For mozilla-mobile#16827: Add documentation for copy url metrics.

docs/metrics.md

@@ -267,13 +267,13 @@ The following metrics are added to the ping:
 | metrics.adjust_creative |[string](https://mozilla.github.io/glean/book/user/metrics/string.html) |A string containing the Adjust creative ID from which the user installed Fenix. This will not send on the first session the user runs. If the install is organic, this will be empty.  |[1](https://github.com/mozilla-mobile/fenix/pull/9253), [2](https://github.com/mozilla-mobile/fenix/pull/15713#issuecomment-703972068)||2021-08-01 |2 |
 | metrics.adjust_network |[string](https://mozilla.github.io/glean/book/user/metrics/string.html) |A string containing the Adjust network ID from which the user installed Fenix. This will not send on the first session the user runs. If the install is organic, this will be empty.  |[1](https://github.com/mozilla-mobile/fenix/pull/9253), [2](https://github.com/mozilla-mobile/fenix/pull/15713#issuecomment-703972068)||2021-08-01 |2 |
 | metrics.close_tab_setting |[string](https://mozilla.github.io/glean/book/user/metrics/string.html) |A string that indicates the setting for tab closing: MANUAL, ONE_DAY, ONE_WEEK, ONE_MONTH  |[1](https://github.com/mozilla-mobile/fenix/pull/15811#issuecomment-706402952)||2021-08-01 |2 |
-| metrics.copy_url_used_count |[counter](https://mozilla.github.io/glean/book/user/metrics/counter.html) |A counter that indicates how many times a user has selected copy option when long pressing on url bar.  |[1](https://github.com/mozilla-mobile/fenix/pull/)||2021-12-08 | |
+| metrics.copy_url_used_count |[counter](https://mozilla.github.io/glean/book/user/metrics/counter.html) |A counter that indicates how many times a user has selected copy option when long pressing on url bar.  |[1](https://github.com/mozilla-mobile/fenix/pull/16915)||2021-12-08 | |
 | metrics.default_browser |[boolean](https://mozilla.github.io/glean/book/user/metrics/boolean.html) |Is Fenix the default browser?  |[1](https://github.com/mozilla-mobile/fenix/pull/1067#issuecomment-474598673), [2](https://github.com/mozilla-mobile/fenix/pull/15713#issuecomment-703972068)||2021-08-01 |2 |
 | metrics.default_moz_browser |[string](https://mozilla.github.io/glean/book/user/metrics/string.html) |The name of the default browser on device if and only if it's a Mozilla owned product  |[1](https://github.com/mozilla-mobile/fenix/pull/1953/), [2](https://github.com/mozilla-mobile/fenix/pull/5216), [3](https://github.com/mozilla-mobile/fenix/pull/15713#issuecomment-703972068)||2021-08-01 |1, 2 |
 | metrics.has_open_tabs |[boolean](https://mozilla.github.io/glean/book/user/metrics/boolean.html) |A boolean that indicates if the user has any open NORMAL tabs.  |[1](https://github.com/mozilla-mobile/fenix/pull/12024), [2](https://github.com/mozilla-mobile/fenix/pull/15713#issuecomment-703972068)||2021-08-01 |2 |
 | metrics.has_recent_pwas |[boolean](https://mozilla.github.io/glean/book/user/metrics/boolean.html) |A boolean that indicates if the user has recently used PWAs. See recently_used_pwa_count for the actual count.  |[1](https://github.com/mozilla-mobile/fenix/pull/11982#pullrequestreview-437963817), [2](https://github.com/mozilla-mobile/fenix/pull/15713#issuecomment-703972068)||2021-08-01 |2 |
 | metrics.has_top_sites |[boolean](https://mozilla.github.io/glean/book/user/metrics/boolean.html) |A boolean that indicates if the user has top sites  |[1](https://github.com/mozilla-mobile/fenix/pull/9556), [2](https://github.com/mozilla-mobile/fenix/pull/15713#issuecomment-703972068)||2021-08-01 |2 |
-| metrics.has_used_url_copy |[boolean](https://mozilla.github.io/glean/book/user/metrics/boolean.html) |A boolean that indicates if the user has elected copy option when long pressing on url bar.  |[1](https://github.com/mozilla-mobile/fenix/pull/)||2021-12-08 | |
+| metrics.has_used_url_copy |[boolean](https://mozilla.github.io/glean/book/user/metrics/boolean.html) |A boolean that indicates if the user has elected copy option when long pressing on url bar.  |[1](https://github.com/mozilla-mobile/fenix/pull/16915)||2021-12-08 | |
 | metrics.mozilla_products |[string_list](https://mozilla.github.io/glean/book/user/metrics/string_list.html) |A list of all the Mozilla products installed on device. We currently scan for: Firefox, Firefox Beta, Firefox Aurora, Firefox Nightly, Firefox Fdroid, Firefox Lite, Reference Browser, Reference Browser Debug, Fenix, Focus, and Lockwise.  |[1](https://github.com/mozilla-mobile/fenix/pull/1953/), [2](https://github.com/mozilla-mobile/fenix/pull/5216), [3](https://github.com/mozilla-mobile/fenix/pull/15713#issuecomment-703972068)||2021-08-01 |1, 2 |
 | metrics.recently_used_pwa_count |[counter](https://mozilla.github.io/glean/book/user/metrics/counter.html) |A counter that indicates how many PWAs a user has recently used. Threshold for "recency" set in HomeActivity#PWA_RECENTLY_USED_THRESHOLD. Currently we are not told by the OS when a PWA is removed by the user, so we use the "recently used" heuristic to judge how many PWAs are still active, as a proxy for "installed". This value will only be set if the user has at least *one* recently used PWA. If they have 0, this metric will not be sent, resulting in a null value during analysis on the server-side. To disambiguate between a failed `recently_used_pwa_count` metric and 0 recent PWAs, please see `has_recent_pwas`.  |[1](https://github.com/mozilla-mobile/fenix/pull/11982#pullrequestreview-437963817), [2](https://github.com/mozilla-mobile/fenix/pull/15713#issuecomment-703972068)||2021-08-01 |2 |
 | metrics.search_count |[labeled_counter](https://mozilla.github.io/glean/book/user/metrics/labeled_counters.html) |The labels for this counter are `<search-engine-name>.<source>`.  If the search engine is bundled with Fenix `search-engine-name` will be the name of the search engine. If it's a custom search engine (defined: https://github.com/mozilla-mobile/fenix/issues/1607) the value will be `custom`.  `source` will be: `action`, `suggestion`, `widget` or `shortcut` (depending on the source from which the search started). Also added the `other` option for the source but it should never enter on this case.  |[1](https://github.com/mozilla-mobile/fenix/pull/1677), [2](https://github.com/mozilla-mobile/fenix/pull/5216), [3](https://github.com/mozilla-mobile/fenix/pull/7310), [4](https://github.com/mozilla-mobile/fenix/pull/15713#issuecomment-703972068)||2021-08-01 |1, 2 |