Update SECURITY.md

Author: rstoyanchev

SECURITY.md

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 # Reporting a Vulnerability
 
-You can create a [draft security advisory here](https://github.com/spring-projects/security-advisories/security/advisories/new).
-Security issues must be disclosed and discussed in private. Please check out our [security policy](https://spring.io/security-policy).
-Note that we can only accept vulnerabilities against [supported versions](https://spring.io/projects/spring-framework#support).
+Please, [open a draft security advisory](https://github.com/spring-projects/security-advisories/security/advisories/new) if you need to disclose and discuss a security issue in private with the Spring Framework team. Note that we only accept reports against [supported versions](https://spring.io/projects/spring-framework#support).
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+For more details, check out our [security policy](https://spring.io/security-policy).
 
 ## JAR signing
 
 Spring Framework JARs released on Maven Central are signed.
 You'll find more information about the key here: https://spring.io/GPG-KEY-spring.txt
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