vscode.md: change watcherExlude out/ to out*/ to filter ChromeOS build output

docs/vscode.md

 # Visual Studio Code Dev
 
 Visual Studio Code is a free, lightweight and powerful code editor for Windows,
 Mac and Linux, based on Electron/Chromium. It has built-in support for
 JavaScript, TypeScript and Node.js and a rich extension ecosystem that adds
 intellisense, debugging, syntax highlighting etc. for many languages (C++,
 Python, Go). It works without too much setup. Get started
 [here](https://code.visualstudio.com/docs).
 
 It is NOT a full-fledged IDE like Visual Studio. The two are completely
@@ skipping 174 matching lines @@
     "*.gni" : "javascript",
     "*.gn" : "javascript"
   },
 
   "files.exclude": {
     // Ignore build output folders.
     "out*/**": true
   },
 
   "files.watcherExclude": {
-    // Don't check out/ and third_party/ for changes to fix issue
+    // Don't watch out*/ and third_party/ for changes to fix an issue
     // where vscode doesn't notice that files have changed.
     // https://github.com/Microsoft/vscode/issues/3998
-    "**/out/**": true,
+    // There is currently another issue that requires a leading **/ for
+    // watcherExlude. Beware that this pattern might affect other out* folders
+    // like src/cc/output/.
+    "**/out*/**": true,
     "**/third_party/**": true
   },
 
   // Wider author column for annotator extension.
   "annotator.annotationColumnWidth": "24em",
 
   // C++ clang format settings.
   "C_Cpp.clang_format_path": "<full_path_to_your_home>/depot_tools/clang-format",
   "C_Cpp.clang_format_sortIncludes": true,
   "C_Cpp.clang_format_formatOnSave": true,
@@ skipping 273 matching lines @@
 
 ```
 "git.autorefresh": false,
 "C_Cpp.autocomplete": "Disabled",
 "C_Cpp.addWorkspaceRootToIncludePath": false
 ```
 
 ### More
 More tips and tricks can be found
 [here](https://github.com/Microsoft/vscode-tips-and-tricks/blob/master/README.md).