[license] client/simple: SPDX-License-Identifier: AGPL-3.0-or-later

SPDX short-form identifiers to communicate license information in a simple,
efficient, portable and machine-readable manner [1]

[1] https://spdx.dev/learn/handling-license-info/

client/simple/src/less/autocomplete.less

@@ -1,4 +1,4 @@
-/*! Autocomplete.js v2.6.3 | license MIT | (c) 2017, Baptiste Donaux | http://autocomplete-js.com */
+// SPDX-License-Identifier: AGPL-3.0-or-later
 
 .autocomplete {
   position: absolute;