link exercises letter counter fixed

ElviraQDP · ElviraQDP · commit f4b206076671 · 2021-01-27T20:29:58.000Z
diff --git a/exercises/07.2-Letter-Counter/README.md b/exercises/07.2-Letter-Counter/README.md
@@ -1,3 +1,8 @@
+---
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+tutorial: https://www.youtube.com/watch?v=oLTidCuisew
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+---
 
 # `07.2` Letter Counter
 

-Original file line number
+Diff line change
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 +---
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 +tutorial: https://www.youtube.com/watch?v=oLTidCuisew
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 +---
 # `07.2` Letter Counter