Fix very minor typos in documentation: redundant spaces.

doc/html/pcre2pattern.html

@@ -2180,10 +2180,10 @@ be easier to remember:
 <pre>
   (*atomic:\d+)foo
 </pre>
-This kind of parenthesized group "locks up" the  part of the pattern it
+This kind of parenthesized group "locks up" the part of the pattern it contains
-contains once it has matched, and a failure further into the pattern is
+once it has matched, and a failure further into the pattern is prevented from
-prevented from backtracking into it. Backtracking past it to previous items,
+backtracking into it. Backtracking past it to previous items, however, works as
-however, works as normal.
+normal.
 </P>
 <P>
 An alternative description is that a group of this type matches exactly the

doc/pcre2pattern.3

@@ -2186,10 +2186,10 @@ be easier to remember:
 .sp
   (*atomic:\ed+)foo
 .sp
-This kind of parenthesized group "locks up" the  part of the pattern it
+This kind of parenthesized group "locks up" the part of the pattern it contains
-contains once it has matched, and a failure further into the pattern is
+once it has matched, and a failure further into the pattern is prevented from
-prevented from backtracking into it. Backtracking past it to previous items,
+backtracking into it. Backtracking past it to previous items, however, works as
-however, works as normal.
+normal.
 .P
 An alternative description is that a group of this type matches exactly the
 string of characters that an identical standalone pattern would match, if