Correct some spelling in match-phrase-prefix docs (#24956)

Author: david-cho-lerat-HL2

docs/reference/query-dsl/match-phrase-prefix-query.asciidoc

@@ -19,7 +19,7 @@ GET /_search
 
 It accepts the same parameters as the phrase type. In addition, it also
 accepts a `max_expansions` parameter (default `50`) that can control to how
-many prefixes the last term will be expanded. It is highly recommended to set
+many suffixes the last term will be expanded. It is highly recommended to set
 it to an acceptable value to control the execution time of the query. For
 example:
 
@@ -43,7 +43,7 @@ GET /_search
 ===================================================
 
 The `match_phrase_prefix` query is a poor-man's autocomplete.  It is very easy
-to use, which let's you get started quickly with _search-as-you-type_ but it's
+to use, which lets you get started quickly with _search-as-you-type_ but its
 results, which usually are good enough,  can sometimes be confusing.
 
 Consider the query string `quick brown f`.  This query works by creating a
@@ -53,7 +53,7 @@ dictionary to find the first 50 terms that begin with `f`, and
 adds these terms to the phrase query.
 
 The problem is that the first 50 terms may not include the term `fox` so the
-phase `quick brown fox` will not be found.  This usually isn't a problem as
+phrase `quick brown fox` will not be found.  This usually isn't a problem as
 the user will continue to type more letters until the word they are looking
 for appears.