Pontoon: Update Frisian (fy-NL) localization of Firefox Send

Localization authors:
- Fjoerfoks <fryskefirefox@gmail.com>

public/locales/fy-NL/send.ftl

@@ -126,7 +126,7 @@ addPassword = Mei wachtwurd beskermje
 emailPlaceholder = Fier jo e-mailadres yn
 # $size is the size of the file, displayed using the fileSize message as format (e.g. "2.5MB")
 signInSizeBump = Meld jo oan, om bestannen oant { $size } te stjoeren
-signInButton = Oanmelde/Registrearje
+signInOnlyButton = Oanmelde
 accountBenefitTitle = Meitsje in { -firefox }-account of meld jo oan
 # $size is the size of the file, displayed using the fileSize message as format (e.g. "2.5MB")
 accountBenefitLargeFiles = Diel bestannen oant { $size }
@@ -146,3 +146,8 @@ noStreamsOptionCopy = Kopiearje de koppeling om yn in oare browser te iepenjen
 noStreamsOptionFirefox = Probearje ús favorite browser
 noStreamsOptionDownload = Trochgean mei dizze browser
 downloadFirefoxPromo = { -send-short-brand } wurdt jo oanbean troch it folslein fernijde { -firefox }.
+# the next line after the colon contains a file name
+shareLinkDescription = Diel de keppeling nei jo bestân:
+shareLinkButton = Keppeling diele
+# $name is the name of the file
+shareMessage = Download ‘{ $name }’ mei { -send-brand }: ienfâldich, feilich bestannen diele