tdf#93957 fix Emoji pattern of horizontal ellipsis

Typing :.: (one ASCII dot between colons) will enter the Unicode
horizontal ellipsis (U+2026: …) instead of the bad :…: (the
requested Unicode character between colons).

Note: the pattern :...: (three ASCII dots between colons) was
originally intended for the horizontal ellipsis, but that
collides with .*... pattern (default in English and in several
other languages, meaning: replace word ending three ASCII dots).

Change-Id: I97632ff81e04ab9e53026da425b82a2541db0eb1

extras/source/autocorr/emoji/emoji.ulf

@@ -281,7 +281,7 @@ en-US = "bullet2"
 
 [HORIZONTAL_ELLIPSIS]
 x-comment = "… (U+02026), see http://wiki.documentfoundation.org/Emoji"
-en-US = "…"
+en-US = "."
 
 [PER_MILLE_SIGN]
 x-comment = "‰ (U+02030), see http://wiki.documentfoundation.org/Emoji"

extras/source/autocorr/lang/en-US/DocumentList.xml

@@ -987,7 +987,7 @@
   <block-list:block block-list:abbreviated-name=":':" block-list:name="’"/>
   <block-list:block block-list:abbreviated-name=":\\:" block-list:name="∖"/>
   <block-list:block block-list:abbreviated-name=":+-:" block-list:name="±"/>
-  <block-list:block block-list:abbreviated-name=":…:" block-list:name="…"/>
+  <block-list:block block-list:abbreviated-name=":.:" block-list:name="…"/>
   <block-list:block block-list:abbreviated-name=":blond hair:" block-list:name="👱"/>
   <block-list:block block-list:abbreviated-name=":blossom:" block-list:name="🌼"/>
   <block-list:block block-list:abbreviated-name=":blush:" block-list:name="😊"/>