Fix 6.4.0 SNAPSHOT link (#14726)

Author: cameronkorbsonos

README.md

@@ -121,7 +121,7 @@ The OpenAPI Specification has undergone 3 revisions since initial creation in 20
 | OpenAPI Generator Version                                                                                                                                 | Release Date | Notes                                             |
 | --------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------ | ------------------------------------------------- |
 | 7.0.0 (upcoming major release) [SNAPSHOT](https://oss.sonatype.org/content/repositories/snapshots/org/openapitools/openapi-generator-cli/7.0.0-SNAPSHOT/) | Feb/Mar 2023   | Major release with breaking changes (no fallback) |
-| 6.4.0 (upcoming minor release) [SNAPSHOT](https://oss.sonatype.org/content/repositories/snapshots/org/openapitools/openapi-generator-cli/6.3.0-SNAPSHOT/) | 05.12.2022   | Minor release with breaking changes (with fallback) |
+| 6.4.0 (upcoming minor release) [SNAPSHOT](https://oss.sonatype.org/content/repositories/snapshots/org/openapitools/openapi-generator-cli/6.4.0-SNAPSHOT/) | 05.12.2022   | Minor release with breaking changes (with fallback) |
 | [6.3.0](https://github.com/OpenAPITools/openapi-generator/releases/tag/v6.3.0) (latest stable release)                                                    | 01.02.2023   | Minor release with breaking changes (with fallback) |
 | [5.4.0](https://github.com/OpenAPITools/openapi-generator/releases/tag/v5.4.0)                                                    | 31.01.2022   | Minor release with breaking changes (with fallback) |
 | [4.3.1](https://github.com/OpenAPITools/openapi-generator/releases/tag/v4.3.1)                                                    | 06.05.2020   | Patch release (enhancements, bug fixes, etc)                       |