[re, over.match.viable] Remove bad space before full stop. (#4138)

Author: Eelis

source/overloading.tex

@@ -1891,7 +1891,7 @@
 viable only if it has an ellipsis in its parameter list\iref{dcl.fct}.
 For the purposes of overload resolution,
 any argument for which there is no corresponding parameter is
-considered to ``match the ellipsis''\iref{over.ics.ellipsis} .
+considered to ``match the ellipsis''\iref{over.ics.ellipsis}.
 \item
 A candidate function having more than
 \textit{m}

source/regex.tex

@@ -159,7 +159,7 @@
 \tcode{X::length(p)}
   & \tcode{size_t}
   & Yields the smallest \tcode{i} such that \tcode{p[i] == 0}. Complexity is
-    linear in \tcode{i} .
+    linear in \tcode{i}.
   \\ \rowsep
 \tcode{v.translate(c)}
   & \tcode{X::char_type}
@@ -2849,7 +2849,7 @@
 &
 For all integers \tcode{0 < n < m.size()}, the end of the sequence that matched
 sub-expression \tcode{n}. Alternatively, if sub-expression \tcode{n} did not
-participate in the match, then \tcode{last} .
+participate in the match, then \tcode{last}.
 \\ \rowsep
 \tcode{m[n].matched}
 &