move two TODO comments to a github issue

Author: andrewrk

test/standalone.zig

@@ -141,12 +141,12 @@ pub const build_cases = [_]BuildCase{
         .build_root = "test/standalone/install_raw_hex",
         .import = @import("standalone/install_raw_hex/build.zig"),
     },
-    // TODO take away EmitOption.emit_to option and make it give a FileSource
+    // https://github.com/ziglang/zig/issues/17484
     //.{
     //    .build_root = "test/standalone/emit_asm_and_bin",
     //    .import = @import("standalone/emit_asm_and_bin/build.zig"),
     //},
-    // TODO take away EmitOption.emit_to option and make it give a FileSource
+    // https://github.com/ziglang/zig/issues/17484
     //.{
     //    .build_root = "test/standalone/issue_12588",
     //    .import = @import("standalone/issue_12588/build.zig"),