(clarify readme)

Author: agagniere

README.md

@@ -9,9 +9,10 @@ Add the dependency in your `build.zig.zon` by running the following command:
 zig fetch --save git+https://github.com/Orolia2s/json-c#0.17
 ```
 
-Add it in your build.zig:
+Then, in your `build.zig`:
 ```zig
 const jsonc = b.dependency("json-c", { .target = target, .optimize = optimize });
-
-exe.linkLibrary(jsonc.artifact("json-c"));
+const libjsonc = jsonc.artifact("json-c");
+// wherever needed:
+exe.linkLibrary(libjsonc);
 ```