docs: marks El Dorado Transit Authority as launched (#3440)

Author: indexing

docs/index.md

@@ -96,7 +96,7 @@ The following California transit providers have adopted Cal-ITP Benefits. The be
 | **Nevada County Connects**                          | 03/2025             | ✅           | ✅                   | ✅            | ―           | ―          |
 | **Ventura County Transportation Commission**        | 10/2025             | ✅           | ✅                   | ―             | ―           | ―          |
 | **San Luis Obispo Regional Transit**                | 12/2025             | ✅           | ✅                   | ―             | ―           | ―          |
-| **El Dorado Transit Authority**                     | 01/2026 (target)    | \*           | \*                   | \*            | \*          | \*         |
+| **El Dorado Transit Authority**                     | 01/2026             | ✅           | ✅                   | ―             | ―           | ―          |
 | **Redding Area Bus Authority**                      | 01/2026 (target)    | \*           | \*                   | \*            | \*          | \*         |
 | **City of San Luis Obispo**                         | 02/2026 (target)    | \*           | \*                   | \*            | \*          | \*         |
 | **City of Roseville**                               | Planned             | \*           | \*                   | \*            | \*          | \*         |