Fix typos in multiple manual pages

man/dpkg-gensymbols.1

@@ -103,7 +103,7 @@ output symbols files compatible to the \fIdeb\-symbols(5)\fR format:
 it fully processes symbols according to the requirements of their standard tags
 and strips all tags from the output. On the contrary, in template mode
 (\fI\-t\fR) all symbols and their tags (both standard and unknown ones)
-are kept in the output and are written in their orignal form as they were
+are kept in the output and are written in their original form as they were
 loaded.
 .SS Standard symbol tags
 .TP

man/dpkg-scanpackages.1

@@ -45,7 +45,7 @@ you will probably need to compress the file with
 .BR bzip2 (1)
 (generating a Packages.bz2 file) or
 .BR gzip (1)
-(generatinc a Packages.gz file). apt ignores uncompressed Packages
+(generating a Packages.gz file). apt ignores uncompressed Packages
 files except on local access (i.e.
 .B file://
 sources).
@@ -85,7 +85,7 @@ for more information on its format.
 .TP
 .BR \-a ", " \-\-arch " \fIarch\fP"
 Use a pattern consisting of \fI*_all.deb\fP and \fI*_arch.deb\fP instead of
-scanning for all debs,
+scanning for all debs.
 .TP
 .BR \-m ", " \-\-multiversion
 Include all found packages in the output.

man/dpkg.1

@@ -255,7 +255,7 @@ only for compatibility with control file syntax: \fB< << <= = >= >>
 .TP
 .B \-\-command\-fd \fI<n>\fP
 Accept a series of commands on input file descriptor \fI<n>\fP. Note:
-additional options set on the command line, and thru this file descriptor,
+additional options set on the command line, and through this file descriptor,
 are not reset for subsequent commands executed during the same run.
 .TP
 .B \-\-help