Fix lint and add contribuing readme with details on linting

plugin-build/CONTRIBUTING.md

@@ -0,0 +1,13 @@
+This is the source for the Module Graph Gradle plugin.
+
+# Formatting
+The code style of this project is enforced with Ktlint. Run it with:
+`./gradlew :plugin-build:modulegraph:ktlintTestSourceSetCheck`
+
+# Test
+This project has extensive unit tests. Run them locally with:
+`./gradlew :plugin:modulegraph:test`
+
+# Sample project
+Check out the sample project to test out the plugin. Create graphs with:
+`./gradlew createModuleGraph`

plugin-build/modulegraph/src/test/java/dev/iurysouza/modulegraph/graph/Fixtures.kt

@@ -37,13 +37,13 @@ internal fun aModuleGraph() = mapOf(
     ),
     Module(
         path = ":sample:container:gama",
-    )
-        to listOf(
-        Module(
-            path = ":sample:zeta",
-            configName = "implementation",
+    ) to
+        listOf(
+            Module(
+                path = ":sample:zeta",
+                configName = "implementation",
+            ),
         ),
-    ),
 )
 
 internal val expectedMermaidGraphCode = """