docs: additional notes on globs and exclude (#773)

Co-authored-by: 卢海宇 <haiyu.lu@lixinchuxing.com>
Co-authored-by: Anthony Fu <github@antfu.me>

README.md

@@ -359,6 +359,7 @@ Components({
 
   // Glob patterns to match file names to be detected as components.
   // When specified, the `dirs` and `extensions` options will be ignored.
+  // If you want to exclude components being registered, use negative globs with leading `!`.
   globs: ['src/components/*.{vue}'],
 
   // search for subdirectories
@@ -396,7 +397,8 @@ Components({
   // Allow for components to override other components with the same name
   allowOverrides: false,
 
-  // filters for transforming targets
+  // Filters for transforming targets (components to insert the auto import)
+  // Note these are NOT about including/excluding components registered - use `globs` for that
   include: [/\.vue$/, /\.vue\?vue/],
   exclude: [/[\\/]node_modules[\\/]/, /[\\/]\.git[\\/]/, /[\\/]\.nuxt[\\/]/],