Update index.md

Author: clizarraga-UAD7

docs/index.md

@@ -48,7 +48,7 @@ timeline
 
 (†) This three-session series will be offered twice in Fall 2025. 
 (††) Alternating on Fridays.
-(†††) Sep 4, 11, 18
+(†††) Sep 4, 11, 18.
 
 
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