Fix typo.

Thanks to yarons !

Closes #1647

i18n/en.i18n.json

@@ -247,7 +247,7 @@
     "filter-on-desc": "You are filtering cards on this board. Click here to edit filter.",
     "filter-to-selection": "Filter to selection",
     "advanced-filter-label": "Advanced Filter",
-    "advanced-filter-description": "Advanced Filter allows to write a string containing following operators: == != <= >= && || ( ) A space is used as a separator between the Operators. You can filter for all Custom Fields by typing their names and values. For Example: Field1 == Value1. Note: If fields or values contains spaces, you need to encapsulate them into single quotes. For Example: 'Field 1' == 'Value 1'. Also you can combine multiple conditions. For Example: F1 == V1 || F1 = V2. Normally all operators are interpreted from left to right. You can change the order by placing brakets. For Example: F1 == V1 and ( F2 == V2 || F2 == V3 )",
+    "advanced-filter-description": "Advanced Filter allows to write a string containing following operators: == != <= >= && || ( ) A space is used as a separator between the Operators. You can filter for all Custom Fields by typing their names and values. For Example: Field1 == Value1. Note: If fields or values contains spaces, you need to encapsulate them into single quotes. For Example: 'Field 1' == 'Value 1'. Also you can combine multiple conditions. For Example: F1 == V1 || F1 = V2. Normally all operators are interpreted from left to right. You can change the order by placing brackets. For Example: F1 == V1 and ( F2 == V2 || F2 == V3 )",
     "fullname": "Full Name",
     "header-logo-title": "Go back to your boards page.",
     "hide-system-messages": "Hide system messages",