v.vmod: fix typo spotted by Emma on Discord

Author: spytheman

vlib/v/vmod/encoder.v

@@ -45,7 +45,7 @@ pub fn encode(manifest Manifest) string {
 		b.writeln(quote(manifest.repo_url))
 	}
 	if manifest.author != '' {
-		b.write_string('\author: ')
+		b.write_string('\tauthor: ')
 		b.writeln(quote(manifest.author))
 	}
 	b.write_string('\tdependencies: ')

vlib/v/vmod/encoder_test.v

@@ -50,6 +50,7 @@ const mf_with_extra_fields = "Module {
 	version: '0.4.10'
 	license: 'MIT'
 	repo_url: 'https://github.com/vlang/v'
+	author: 'Bilbo Baggins'
 	dependencies: ['hello', 'world']
 	extra_a: ['a', 'b', 'c']
 	extra_b: [