Update levels-and-ranks.mdx

Added alt tags

blogs/levels-and-ranks.mdx

@@ -29,11 +29,11 @@ Levels get you ranks. Each rank has a name and badge icon associated with it tha
 
 The five ranks in Codédex include:
 
-- <img src="https://i.imgur.com/lYWAZBL.png" height="25" style="vertical-align: middle" /> Bronze (Level 1-5)
-- <img src="https://i.imgur.com/lYWAZBL.png" height="25" style="vertical-align: middle" /> Silver (Level 6-10)
-- <img src="https://i.imgur.com/lYWAZBL.png" height="25" style="vertical-align: middle" /> Gold (Level 11-15)
-- <img src="https://i.imgur.com/lYWAZBL.png" height="25" style="vertical-align: middle" /> Diamond (Level 16-20)
-- <img src="https://i.imgur.com/lYWAZBL.png" height="25" style="vertical-align: middle" /> Platinum (Level 21-25)
+- <img src="https://i.imgur.com/lYWAZBL.png" height="25" style="vertical-align: middle" alt="Bronze Badge"/> Bronze (Level 1-5)
+- <img src="https://i.imgur.com/lYWAZBL.png" height="25" style="vertical-align: middle" alt="Silver Badge"/> Silver (Level 6-10)
+- <img src="https://i.imgur.com/lYWAZBL.png" height="25" style="vertical-align: middle" alt="Gold Badge"/> Gold (Level 11-15)
+- <img src="https://i.imgur.com/lYWAZBL.png" height="25" style="vertical-align: middle" alt="Diamond Badge"/> Diamond (Level 16-20)
+- <img src="https://i.imgur.com/lYWAZBL.png" height="25" style="vertical-align: middle" alt="Platinum Badge"/> Platinum (Level 21-25)
 
 Most Codédex learners will find themselves in the introductory ranks (e.g., Bronze and Silver) for quite a while, which is a testament to how difficult it can be to climb rankings.