Add "tex" to list of extensions for LaTeX mode.

In my experience, `.tex` is a much more common extension for LaTeX documents.

Author: ian-r-rose

mode/meta.js

@@ -138,7 +138,7 @@
     {name: "Stylus", mime: "text/x-styl", mode: "stylus", ext: ["styl"]},
     {name: "Swift", mime: "text/x-swift", mode: "swift", ext: ["swift"]},
     {name: "sTeX", mime: "text/x-stex", mode: "stex"},
-    {name: "LaTeX", mime: "text/x-latex", mode: "stex", ext: ["text", "ltx"], alias: ["tex"]},
+    {name: "LaTeX", mime: "text/x-latex", mode: "stex", ext: ["text", "ltx", "tex"], alias: ["tex"]},
     {name: "SystemVerilog", mime: "text/x-systemverilog", mode: "verilog", ext: ["v", "sv", "svh"]},
     {name: "Tcl", mime: "text/x-tcl", mode: "tcl", ext: ["tcl"]},
     {name: "Textile", mime: "text/x-textile", mode: "textile", ext: ["textile"]},