Fixed a man page typo found by lintian

xorriso-dd-target/xorriso-dd-target.1

@@ -205,7 +205,7 @@ Step 1:
 .br
 Please make sure that the desired target device is plugged _out_ now.
 .br
-If it is currently plugged in, make sure to unmount all its fileystems
+If it is currently plugged in, make sure to unmount all its filesystems
 .br
 and then unplug it.
 .br

xorriso-dd-target/xorriso-dd-target.info

@@ -178,7 +178,7 @@ Caused by option -plug_test: Attempt to find the desired device by
 watching it appear after being plugged in.
 Step 1:
 Please make sure that the desired target device is plugged _out_ now.
-If it is currently plugged in, make sure to unmount all its fileystems
+If it is currently plugged in, make sure to unmount all its filesystems
 and then unplug it.
 Press the Enter key when ready.
 
@@ -563,16 +563,16 @@ Node: Simplenames2789
 Node: Listall3513
 Node: Givendevices5086
 Node: Plugtest6050
-Node: Dowrite7955
-Node: Unwise9336
-Node: Reasons10958
-Node: Options13539
-Node: Examples17147
-Node: Files17320
-Node: Seealso17478
-Node: Bugreport17644
-Node: Legal18231
-Node: CommandIdx18942
-Node: ConceptIdx20281
+Node: Dowrite7956
+Node: Unwise9337
+Node: Reasons10959
+Node: Options13540
+Node: Examples17148
+Node: Files17321
+Node: Seealso17479
+Node: Bugreport17645
+Node: Legal18232
+Node: CommandIdx18943
+Node: ConceptIdx20282
 
 End Tag Table

xorriso-dd-target/xorriso-dd-target.texi

@@ -305,7 +305,7 @@ Step 1:
 @*
 Please make sure that the desired target device is plugged _out_ now.
 @*
-If it is currently plugged in, make sure to unmount all its fileystems
+If it is currently plugged in, make sure to unmount all its filesystems
 @*
 and then unplug it.
 @*