move English info text under locales directory

packages/node_modules/@node-red/nodes/locales/en-US/io/23-watch.html

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+<!--
+  Copyright JS Foundation and other contributors, http://js.foundation
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+
+<script type="text/x-red" data-help-name="watch">
+    <p>Watches a directory or file for changes.</p>
+    <p>You can enter a list of comma separated directories and/or files. You will
+    need to put quotes "..." around any that have spaces in.</p>
+    <p>On Windows you must use double back-slashes \\ in any directory names.</p>
+    <p>The full filename of the file that actually changed is put into <code>msg.payload</code> and <code>msg.filename</code>,
+    while a stringified version of the watch list is returned in <code>msg.topic</code>.</p>
+    <p><code>msg.file</code> contains just the short filename of the file that changed.
+    <code>msg.type</code> has the type of thing changed, usually <i>file</i> or <i>directory</i>,
+    while <code>msg.size</code> holds the file size in bytes.</p>
+    <p>Of course in Linux, <i>everything</i> is a file and thus can be watched...</p>
+    <p><b>Note: </b>The directory or file must exist in order to be watched. If the file
+    or directory gets deleted it may no longer be monitored even if it gets re-created.</p>
+</script>