[skip e2e] Check the syntax of query_boolean_expr md (#14708)

Signed-off-by: min.tian <min.tian.cn@gmail.com>
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min.tian 2022-01-04 19:11:46 +08:00 committed by GitHub
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@ -72,7 +72,7 @@ IDENTIFIER := 列名
Tips:
1. NIL represents an empty string, which means there is no Predicate for Expr.
2. Gramma is described by EBNF syntaxexpressions that may be omitted or repeated are represented through curly braces `{...}`.
2. Gramma is described by EBNF syntax, expressions that may be omitted or repeated are represented through curly braces `{...}`.
After syntax analysis, the following rules will be applied: