fix(language): add missing ligatures (@Arkanosis)

Both ligature and letters were missing.

Author: Arkanosis

frontend/static/languages/french_10k.json

@@ -6309,7 +6309,7 @@
     "soudoyer",
     "recenser",
     "recherché",
-    "rancurs",
+    "rancœurs",
     "nombrilisme",
     "huilerie",
     "pullulation",
@@ -7787,7 +7787,7 @@
     "unanimement",
     "nuance",
     "étudiés",
-    "crève-cur",
+    "crève-cœur",
     "créateurs",
     "variations",
     "pébroc",