Merge pull request swiftlang#20909 from compnerd/typo

test: correct lit configuration typo

Author: compnerd

test/lit.cfg

@@ -833,7 +833,7 @@ elif run_os in ['windows-msvc']:
     subst_target_swift_frontend_mock_sdk_after = ''
 
     config.target_build_swift_dylib =                                            \
-            ("%r -parse-as-library -emit-librar -o '\\1'" % (config.target_build_swift))
+            ("%r -parse-as-library -emit-library -o '\\1'" % (config.target_build_swift))
     config.target_clang =                                                        \
             ('clang++ -target %s %s' % (config.variant_triple, clang_mcp_opt))
     config.target_ld =                                                           \