lark word regex consistency

Author: mjreno

flopy4/mf6/codec/reader/grammar/basic.lark

@@ -4,7 +4,7 @@ block_name: CNAME [INT]
 _list: line*
 line: [WS] item+ _NL+
 item: word | NUMBER
-word: /[a-zA-Z0-9._+'~,-\\(\\)]+/
+word: /[a-zA-Z0-9._'~,+-\\(\\)]+/
 
 %import common.NEWLINE -> _NL
 %import common.WS

flopy4/mf6/codec/reader/grammar/typed.lark

@@ -19,7 +19,7 @@ filename: ESCAPED_STRING | word
 data: double+
 record: token+ NEWLINE
 token: number | word
-word: /(?!(?i:begin|end))[a-zA-Z0-9._'~,-\\(\\)]+/
+word: /(?!(?i:begin|end))[a-zA-Z0-9._'~,+-\\(\\)]+/
 _token: word | number
 
 %import common.NEWLINE