docs: update #TechForUkraine message (vuestorefront#6660)

* docs: update #TechForUkraine message

* docs: fix typo

Author: filipsobol

packages/core/docs/README.md

@@ -1,15 +1,17 @@
-## #TechForUkraine - how can you support Ukrainian civil society?
+:::warning #TechForUkraine - We oppose Russia's unprovoked and unjustified attack on Ukraine
 
+<br>
 <center>
   <img src="https://user-images.githubusercontent.com/1626923/155853691-d6d0a541-d3b9-40bf-b8f5-2d38303e9e49.png" />
 </center>
 
-**All help is needed**. If you are unable to help locally, by sheltering a fellow Ukrainian, you can also:
+Russia launched a devastating, unprovoked, and unjustified attack on Ukraine. **Ukraine and its people need help** - if you are unable to help locally, by sheltering a fellow Ukrainian, you can also:
 
 * Support the Ukraine Armed forces directly by sending funding to [NBU Special Account](https://bank.gov.ua/en/news/all/natsionalniy-bank-vidkriv-spetsrahunok-dlya-zboru-koshtiv-na-potrebi-armiyi)
 * Help the [Ukrainian Red Cross Society](https://www.icrc.org/en/where-we-work/europe-central-asia/ukraine)
 * Donate to [United Help Ukraine](https://unitedhelpukraine.org/)
 * Donate to [Voices of Children](https://voices.org.ua/en/)
+:::
 
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