Update string expected from "help info proc" on gdb.base/info-proc.exp

Commit 73f1bd769a ("Make the "info proc" documentation more
consistent.") updated the output from "help info proc", but forgot to
update the test on gdb.base/info-proc.exp.  This obvious patch does
that.

Checked-in as obvious.

gdb/testsuite/ChangeLog:
2018-10-06  Sergio Durigan Junior  <sergiodj@redhat.com>

	* gdb.base/info-proc.exp: Update string expected from "help info
	proc".

gdb/testsuite/ChangeLog

@@ -1,3 +1,8 @@
+2018-10-06  Sergio Durigan Junior  <sergiodj@redhat.com>
+
+	* gdb.base/info-proc.exp: Update string expected from "help info
+	proc".
+
 2018-10-04  Tom Tromey  <tom@tromey.com>
 
 	* gdb.cp/maint.exp (test_invalid_name): Update expected output.

gdb/testsuite/gdb.base/info-proc.exp

@@ -25,7 +25,7 @@ if {[prepare_for_testing "failed to prepare" $testfile \
     return -1
 }
 
-gdb_test "help info proc" "Show /proc process information about .*"
+gdb_test "help info proc" "Show additional information about a process.*"
 
 gdb_test_multiple "info proc" "info proc without a process" {
     -re "No current process.*$gdb_prompt $" {