Fixed release note

readme.md

@@ -51,7 +51,7 @@ glm::mat4 camera(float Translate, glm::vec2 const & Rotate)
 
 ## Release notes
 
-#### [GLM 0.9.7.2](https://github.com/g-truc/glm/tree/0.9.7) - 2016-01-XX
+#### [GLM 0.9.7.2](https://github.com/g-truc/glm/releases/tag/0.9.7.2) - 2016-01-03
 ##### Fixes:
 - Fixed GTC_round floorMultiple/ceilMultiple #412
 - Fixed GTC_packing unpackUnorm3x10_1x2 #414