mdbx-doc: minor refine man-pages for -n utils option.

Change-Id: Ie81145fc1ec70f66e6c7be7332b2106d6636dc6b

src/man1/mdbx_chk.1

@@ -84,6 +84,7 @@ Turn to a specified meta-page EVEN ON UNSUCCESSFUL CHECK!
 .BR \-n
 Open MDBX environment(s) which do not use subdirectories.
 This is legacy option. For now MDBX handles this automatically.
+
 .SH DIAGNOSTICS
 Exit status is zero if no errors occur. Errors result in a non-zero exit status
 and a diagnostic message being written to standard error

src/man1/mdbx_copy.1

@@ -47,6 +47,7 @@ Currently it fails if the environment has suffered a page leak.
 .TP
 .BR \-n
 Open MDBX environment(s) which do not use subdirectories.
+This is legacy option. For now MDBX handles this automatically.
 
 .SH DIAGNOSTICS
 Exit status is zero if no errors occur.

src/man1/mdbx_dump.1

@@ -69,6 +69,7 @@ Rescure mode. Ignore some errors to dump corrupted DB.
 .BR \-n
 Dump an MDBX database which does not use subdirectories.
 This is legacy option. For now MDBX handles this automatically.
+
 .SH DIAGNOSTICS
 Exit status is zero if no errors occur.
 Errors result in a non-zero exit status and

src/man1/mdbx_load.1

@@ -88,6 +88,7 @@ Rescure mode. Ignore errors to load corrupted DB dump.
 .BR \-n
 Load an MDBX database which does not use subdirectories.
 This is legacy option. For now MDBX handles this automatically.
+
 .SH DIAGNOSTICS
 Exit status is zero if no errors occur.
 Errors result in a non-zero exit status and

src/man1/mdbx_stat.1

@@ -61,7 +61,9 @@ Display the status of a specific subdatabase.
 .TP
 .BR \-n
 Display the status of an MDBX database which does not use subdirectories.
-This is legacy option. For now MDBX handles this automatically.
+This is legacy option. For now MDBX handles this automatically
+for existing databases, but may be required while creating new.
+
 .SH DIAGNOSTICS
 Exit status is zero if no errors occur.
 Errors result in a non-zero exit status and