Add version 2.7.3 to setup docs

Author: lupuuss

website/docs/Setup.mdx

@@ -164,7 +164,7 @@ You can refer to [this file](https://github.com/lupuuss/Mokkery/blob/master/buil
       | 2.10.0                             | 2.2.0 - 2.2.20                                         |
       | 2.9.0                              | 2.2.0 - 2.2.10                                         |
       | 2.8.0                              | 2.1.20 - 2.1.21                                        |
-      | 2.7.2                              | 2.1.0 - 2.1.21                                         |
+      | 2.7.2 - 2.7.3                      | 2.1.0 - 2.1.21                                         |
       | 2.6.0 - 2.7.1                      | 2.1.0 - 2.1.10                                         |
       | 2.3.0 - 2.5.1                      | 2.0.0 - 2.0.21                                         |
       | 2.0.0 – 2.2.0                      | 2.0.0 - 2.0.10                                         |