docs: required version in Rails README from 0.24 to 0.34 (#1369)

fix: Change required version in Rails README from 0.24 to 0.34

Author: j15e

instrumentation/rails/README.md

@@ -24,8 +24,8 @@ gem opentelemetry-instrumentation-rails, "<version>"
 | --- | --- |
 | `5.2` | `= 0.24.1` |
 | `6.0` | `= 0.28.0` |
-| `6.1` | `= 0.24` |
-| `7.x` | `~> 0.24` |
+| `6.1` | `= 0.34` |
+| `7.x` | `~> 0.34` |
 
 ## Usage