en to km translation catalogue (3 entries)

[ctx: Toolbar button tooltip for the Unlink feature.]
en: Unlink
km: ផ្ដាច់​តំណ

[ctx: Toolbar button tooltip for the Link feature.]
en: Link
km: តំណ

[ctx: Label for the URL input in the Link URL editing balloon.]
en: Link URL
km: URL តំណ
