Fixing broken links (netdata#7123)

Author: joelhans

CONTRIBUTORS.md

@@ -10,7 +10,7 @@ This agreement is part of the legal framework of the open-source ecosystem
 that adds some red tape, but protects both the contributor and the project.
 
 To understand why this is needed, please read [a well-written chapter from
-Karl Fogel’s Producing Open Source Software on CLAs](https://producingoss.com/en/copyright-assignment.html).
+Karl Fogel’s Producing Open Source Software on CLAs](https://producingoss.com/en/contributor-agreements.html).
 
 By signing this agreement, you do not change your rights to use your own
 contributions for any other purpose.

collectors/python.d.plugin/springboot/README.md

@@ -63,7 +63,7 @@ public class HeapPoolMetrics implements PublicMetrics {
 }
 ```
 
-Please refer [Spring Boot Actuator: Production-ready features](https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready.html) and [81. Actuator - Part IX. ‘How-to’ guides](https://docs.spring.io/spring-boot/docs/current/reference/html/howto-actuator.html) for more information.
+Please refer [Spring Boot Actuator: Production-ready Features](https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready-features.html#production-ready) and [81. Actuator - Part IX. ‘How-to’ guides](https://docs.spring.io/spring-boot/docs/current/reference/html/howto.html#howto-actuator) for more information.
 
 ## Charts