GITBOOK-27: v1.24.0 docs

Author: LexLuthr

documentation/en/versions.md

@@ -7,6 +7,7 @@ This is the compatibility matrix for the latest free Curio releases.
 | 1.22.1 / Automatic | v1.27.X       | MainNet | v2.3.0-rc2 | 2.20.X / Automatic | 0.19 / Automatic |
 | 1.23.0             | >v1.28.1      | MainNet | v2.3.0     | 2.20.X / Automatic | 0.19 / Automatic |
 | v1.23.1            | >v1.28.1      | MainNet | v2.3.0     | 2.20.x / Automatic | 0.19 / Automatic |
+| v1.24.0            | v1.30.0-rcX   | MainNet | v2.4.0-rc1 | 2.20.x / Automatic | 0.21 / Automatic |
 
 No preference is denoted by "X".