expr: remove manual word breaks in pod

[mknos]

• Similar to recent commit for uniq: 4d22ee8
• Breaking up words like "re-\nturn" gets in the way of the pod formatter

--- pod0	2025-01-07 12:33:58.825372933 +0800
+++ pod1	2025-01-07 12:35:15.441604917 +0800
@@ -24,8 +24,8 @@
 
     expr1 {=, >, >=, <, <=, !=} expr2
         Returns the results of integer comparison if both arguments are
-        integers; otherwise, returns the results of string comparison us-
-        ing the locale-specific collation sequence. The result of each
+        integers; otherwise, returns the results of string comparison using
+        the locale-specific collation sequence. The result of each
         comparison is 1 if the specified relation is true, or 0 if the
         relation is false.
 
@@ -34,8 +34,8 @@
         arguments.
 
     expr1 {*, /, %} expr2
-        Returns the results of multiplication, integer division, or re-
-        mainder of integer-valued arguments.
+        Returns the results of multiplication, integer division, or
+        remainder of integer-valued arguments.
 
     expr1 : expr2
         The ``:'' operator matches expr1 against expr2, which must be a
@@ -43,9 +43,9 @@
         beginning of the string with an implicit ``^''. The regular
         expression language is perlre(1).
 
-        If the match succeeds and the pattern contains at least one regu-
-        lar expression subexpression ``(...)'', the string correspond- ing
-        to ``$1'' is returned; otherwise the matching operator re- turns the
+        If the match succeeds and the pattern contains at least one regular
+        expression subexpression ``(...)'', the string corresponding to
+        ``$1'' is returned; otherwise the matching operator returns the
         number of characters matched. If the match fails and the pattern
         contains a regular expression subexpression the null string is
         returned; otherwise 0.

[briandfoy]

changes: unhyphenated some hard-coded line wrapping