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[DOCS] Fix pattern replace token filter intro (#64189) (#64218) 

Removes an incorrect statement about anchoring regex patterns on tokens.

Co-authored-by: Elasticsearch addict <amitmbm87@gmail.com>
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James Rodewig 2020-10-27 10:35:34 -04:00 committed by GitHub
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docs/reference/analysis/tokenfilters/pattern_replace-tokenfilter.asciidoc
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@ -11,8 +11,7 @@ https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html[Java's
regular expression syntax]. By default, the filter replaces matching
substrings with an empty substring (`""`).
Regular expressions cannot be anchored to the
beginning or end of a token. Replacement substrings can use Java's
Replacement substrings can use Java's
https://docs.oracle.com/javase/8/docs/api/java/util/regex/Matcher.html#appendReplacement-java.lang.StringBuffer-java.lang.String-[`$g` syntax] to reference capture groups
from the original token text.