Update runtime files.
diff --git a/runtime/doc/change.txt b/runtime/doc/change.txt
index fe457c9..ab820b0 100644
--- a/runtime/doc/change.txt
+++ b/runtime/doc/change.txt
@@ -1,4 +1,4 @@
-*change.txt* For Vim version 8.0. Last change: 2018 Apr 17
+*change.txt* For Vim version 8.0. Last change: 2018 May 06
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -110,7 +110,7 @@
J Join [count] lines, with a minimum of two lines.
Remove the indent and insert up to two spaces (see
below). Fails when on the last line of the buffer.
- If [count] is too big it is reduce to the number of
+ If [count] is too big it is reduced to the number of
lines available.
*v_J*
@@ -446,7 +446,7 @@
For decimals a leading negative sign is considered for incrementing/
decrementing, for binary, octal and hex values, it won't be considered. To
-ignore the sign Visually select the number before using CTRL-A or CTRL-X.
+ignore the sign Visually select the number before using CTRL-A or CTRL-X.
For numbers with leading zeros (including all octal and hexadecimal numbers),
Vim preserves the number of characters in the number when possible. CTRL-A on