DOCSP-45657: Fix libbson and libmongoc links (#223)

Author: norareidy

source/languages/c.txt

@@ -33,7 +33,7 @@ connects your C application to MongoDB.
 
    .. card::
       :headline: libbson
-      :url: https://www.mongodb.com/docs/languages/c/c-driver/current/libbson/
+      :url: https://mongoc.org/libbson/current/
       :icon: /images/icons/c.svg
       :icon-alt: Driver card icon
 
@@ -42,7 +42,7 @@ connects your C application to MongoDB.
 
    .. card::
       :headline: libmongoc
-      :url: https://www.mongodb.com/docs/languages/c/c-driver/current/libmongoc/
+      :url: https://mongoc.org/libmongoc/current/
       :icon: /images/icons/c.svg
       :icon-alt: Driver card icon