doc: Fixed typo in the release notes

Signed-off-by: Christian Decker <[email protected]>

Author: cdecker

doc/release-notes/release-0.6.md

@@ -2,7 +2,7 @@
 ## a.k.a. "I Accidentally The Smart Contract"
 
 The long wait is over: the c-lightning team is excited to announce the 0.6 release of
-[c-lightning][clightning], an important milestone for the project. This complete rewrite of the previous implementation is the first fully specification-complaint release of c-lightning. It migrates away from the protocol used while designing the specification and toward a new architecture that is modular and extensible, to better adapt to your needs and your infrastructure.
+[c-lightning][clightning], an important milestone for the project. This complete rewrite of the previous implementation is the first fully specification-compliant release of c-lightning. It migrates away from the protocol used while designing the specification and toward a new architecture that is modular and extensible, to better adapt to your needs and your infrastructure.
 
 ## New Features