test(remove): Update fixture for a suggestion

Author: epage

tests/testsuite/cargo_remove/invalid_dep/in/Cargo.toml

@@ -11,6 +11,7 @@ path = "src/main.rs"
 semver = "0.1.0"
 
 [dependencies]
+invalid-dependency-name = "0.6"
 docopt = "0.6"
 semver = "0.1"
 

tests/testsuite/cargo_remove/invalid_dep/mod.rs

@@ -9,6 +9,8 @@ use cargo_test_support::Project;
 #[cargo_test]
 fn case() {
     cargo_test_support::registry::init();
+    cargo_test_support::registry::Package::new("invalid-dependency-name", "0.6.2+my-package")
+        .publish();
     cargo_test_support::registry::Package::new("docopt", "0.6.2+my-package").publish();
     cargo_test_support::registry::Package::new("semver", "0.1.1")
         .feature("std", &[])

tests/testsuite/cargo_remove/invalid_dep/out/Cargo.toml

@@ -11,6 +11,7 @@ path = "src/main.rs"
 semver = "0.1.0"
 
 [dependencies]
+invalid-dependency-name = "0.6"
 docopt = "0.6"
 semver = "0.1"