Ubuntu 22.04 integration: mancheck

Correct new mandoc errors.
```
STYLE: input text line longer than 80 bytes
STYLE: no blank before trailing delimiter
```

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes #14148

man/man1/test-runner.1

@@ -99,7 +99,8 @@ one directory.
 The options specified on the command line or in a
 .Ar runfile
 apply to individual tests in the group.
-The exception is options pertaining to pre and post scripts, which act on all tests as a group.
+The exception is options pertaining to pre and post scripts, which act on all
+tests as a group.
 Rather than running before and after each test,
 these scripts are run only once each at the start and end of the test group.
 .Ss Test Execution
@@ -254,7 +255,7 @@ Execute the post script as
 .
 .Sh EXAMPLES
 .Bl -tag -width "-h"
-.It Sy Example 1 : No Running ad-hoc tests.
+.It Sy Example 1 : No Running ad-hoc tests .
 This example demonstrates the simplest invocation of
 .Nm .
 .Bd -literal
@@ -270,7 +271,7 @@ Running Time:   00:00:07
 Percent passed: 100.0%
 Log directory:  /var/tmp/test_results/20120923T180654
 .Ed
-.It Sy Example 2 : No Creating a Ar runfile No for future use.
+.It Sy Example 2 : No Creating a Ar runfile No for future use .
 This example demonstrates creating a
 .Ar runfile
 with non-default options.