Edit README to refer to 1.5.11 release and 1.5.12-SNAPSHOT.

Author: jxblum

README.adoc

@@ -79,8 +79,8 @@ The following SBDG versions are currently maintained and developed.
 | `1.7.0-M2`| https://docs.spring.io/spring-boot-data-geode-build/1.7.x/reference/html5/[Ref Docs] | https://docs.spring.io/spring-boot-data-geode-build/1.7.x/api/[Javadoc] | https://docs.spring.io/spring-boot-data-geode-build/1.7.x/reference/html5/#geode-samples[Samples]
 | `1.6.5-SNAPSHOT`| https://docs.spring.io/spring-boot-data-geode-build/1.6.x-SNAPSHOT/reference/html5/[Ref Docs] | https://docs.spring.io/spring-boot-data-geode-build/1.6.x-SNAPSHOT/api/[Javadoc] | https://docs.spring.io/spring-boot-data-geode-build/1.6.x-SNAPSHOT/reference/html5/#geode-samples[Samples]
 | `1.6.4`| https://docs.spring.io/spring-boot-data-geode-build/1.6.x/reference/html5/[Ref Docs] | https://docs.spring.io/spring-boot-data-geode-build/1.6.x/api/[Javadoc] | https://docs.spring.io/spring-boot-data-geode-build/1.6.x/reference/html5/#geode-samples[Samples]
-| `1.5.11-SNAPSHOT`| https://docs.spring.io/spring-boot-data-geode-build/1.5.x-SNAPSHOT/reference/html5/[Ref Docs] | https://docs.spring.io/spring-boot-data-geode-build/1.5.x-SNAPSHOT/api/[Javadoc] | https://docs.spring.io/spring-boot-data-geode-build/1.5.x-SNAPSHOT/reference/html5/#geode-samples[Samples]
-| `1.5.10`| https://docs.spring.io/spring-boot-data-geode-build/1.5.x/reference/html5/[Ref Docs] | https://docs.spring.io/spring-boot-data-geode-build/1.5.x/api/[Javadoc] | https://docs.spring.io/spring-boot-data-geode-build/1.5.x/reference/html5/#geode-samples[Samples]
+| `1.5.12-SNAPSHOT`| https://docs.spring.io/spring-boot-data-geode-build/1.5.x-SNAPSHOT/reference/html5/[Ref Docs] | https://docs.spring.io/spring-boot-data-geode-build/1.5.x-SNAPSHOT/api/[Javadoc] | https://docs.spring.io/spring-boot-data-geode-build/1.5.x-SNAPSHOT/reference/html5/#geode-samples[Samples]
+| `1.5.11`| https://docs.spring.io/spring-boot-data-geode-build/1.5.x/reference/html5/[Ref Docs] | https://docs.spring.io/spring-boot-data-geode-build/1.5.x/api/[Javadoc] | https://docs.spring.io/spring-boot-data-geode-build/1.5.x/reference/html5/#geode-samples[Samples]
 
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