patch 8.1.1947: when executing one test the report doesn't show it

Problem:    When executing one test the report doesn't show it.
Solution:   Adjust the regexp. (Daniel Hahler, closes #4879)
diff --git a/src/testdir/summarize.vim b/src/testdir/summarize.vim
index 4a88935..5bbf0b3 100644
--- a/src/testdir/summarize.vim
+++ b/src/testdir/summarize.vim
@@ -21,9 +21,9 @@
 
   try
     " This uses the :s command to just fetch and process the output of the
-    " tests, it doesn't acutally replace anything.
+    " tests, it doesn't actually replace anything.
     " And it uses "silent" to avoid reporting the number of matches.
-    silent %s/^Executed\s\+\zs\d\+\ze\s\+tests/\=Count(submatch(0),'executed')/egn
+    silent %s/^Executed\s\+\zs\d\+\ze\s\+tests\?/\=Count(submatch(0),'executed')/egn
     silent %s/^SKIPPED \zs.*/\=Count(submatch(0), 'skipped')/egn
     silent %s/^\(\d\+\)\s\+FAILED:/\=Count(submatch(1), 'failed')/egn
 
diff --git a/src/version.c b/src/version.c
index 26587aa..463d215 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1947,
+/**/
     1946,
 /**/
     1945,