only extract .html.erb files instead of all .erb files

Author: erik-krogh

javascript/extractor/src/com/semmle/js/extractor/AutoBuild.java

@@ -141,7 +141,7 @@
  *   <li>All JavaScript files, that is, files with one of the extensions supported by {@link
  *       FileType#JS} (currently ".js", ".jsx", ".mjs", ".cjs", ".es6", ".es").
  *   <li>All HTML files, that is, files with with one of the extensions supported by {@link
- *       FileType#HTML} (currently ".htm", ".html", ".xhtm", ".xhtml", ".vue", ".erb").
+ *       FileType#HTML} (currently ".htm", ".html", ".xhtm", ".xhtml", ".vue", ".html.erb").
  *   <li>All YAML files, that is, files with one of the extensions supported by {@link
  *       FileType#YAML} (currently ".raml", ".yaml", ".yml").
  *   <li>Files with base name "package.json" or "tsconfig.json", and files whose base name

javascript/extractor/src/com/semmle/js/extractor/FileExtractor.java

@@ -104,7 +104,7 @@ private static int skipBOM(byte[] bytes, int length) {
 
   /** Information about supported file types. */
   public static enum FileType {
-    HTML(".htm", ".html", ".xhtm", ".xhtml", ".vue", ".hbs", ".ejs", ".njk", ".erb") {
+    HTML(".htm", ".html", ".xhtm", ".xhtml", ".vue", ".hbs", ".ejs", ".njk", ".html.erb") {
       @Override
       public IExtractor mkExtractor(ExtractorConfig config, ExtractorState state) {
         return new HTMLExtractor(config, state);