fix(math_i): lr| should not expand to norm

we already have norm on math_iA.lua

Author: iurimateus

lua/luasnip-latex-snippets/math_i.lua

@@ -46,7 +46,7 @@ local math_i = {
   ),
   ls.parser.parse_snippet(
     { trig = "lr|", name = "left| right|" },
-    "\\left\\| ${1:${TM_SELECTED_TEXT}} \\right\\| $0"
+    "\\left| ${1:${TM_SELECTED_TEXT}} \\right| $0"
   ),
   ls.parser.parse_snippet(
     { trig = "lr{", name = "left{ right}" },