Update sui-move-library.md (MystenLabs#7246)

add article and Grammarly check

Co-authored-by: Randall-Mysten <109545725+randall-Mysten@users.noreply.github.com>

doc/src/build/move/sui-move-library.md

@@ -60,7 +60,8 @@ To make an object `obj` immutable, one can call:
 ```
 transfer::freeze_object(obj);
 ```
-After this call, `obj` becomes immutable which means it can never be mutated or deleted. This process is also irreversible: once an object is frozen, it will stay frozen forever. An immutable object can be used as reference by anyone in their Move call.
+
+After this call, `obj` becomes immutable, meaning you can't mutate or delete it. This process is also irreversible: once an object is frozen, it stays frozen forever. Anyone can use an immutable object as a reference in their Move call.
 
 ### Shared
 To make an object `obj` shared, one can call: