Update Solution.md

Author: muryulia

Case Study #8 - Fresh Segments/Solution.md

@@ -1531,7 +1531,7 @@ FROM
  (
  WITH ranking AS (
  SELECT
- month_year :: varchar,
+ month_year,
  id,
  interest_name,
  avg_composition,
@@ -1609,7 +1609,7 @@ ORDER BY
  1
 ``` 
 
-| month_year | interest_name | max_index_composition | \_3_month_moving_avg | \_1_month_ago  | \_2_month_ago  |
+| month_year | interest_name | max_index_composition | \_3_month_moving_avg| \_1_month_ago | \_2_month_ago |
 | ---------- | ----------------------------- | --------------------- | ------------------- | --------------------------------- | --------------------------------- |
 | 2018-09-01 | Work Comes First Travelers | 8.26 | 7.61 | Las Vegas Trip Planners: 7.21 | Las Vegas Trip Planners: 7.36 |
 | 2018-10-01 | Work Comes First Travelers | 9.14 | 8.20 | Work Comes First Travelers: 8.26 | Las Vegas Trip Planners: 7.21 |