doc: fix -pP description

Previously, the docs said that -p == --paste-after
and that -P == --paste-before
and didn't mention --paste-section-after/--paste-section-before at all.

That's not correct.

Actually, -p == --paste-section-after
and -P == --paste-section-before;
also there's --paste-after and --paste-before
which have no short option alias.

README.md

@@ -18,7 +18,7 @@ to Markdown README files.
 # Options
 
 
-* **-p**, **--paste-after** _SECTION_:_FILENAME_  
+* **-p**, **--paste-section-after** _SECTION_:_FILENAME_  
   Instructs the program to attach a Markdown file
   after the section named _SECTION_
   has been completely written to the output.
@@ -29,11 +29,15 @@ to Markdown README files.
   as their top-level section title.  
   This option can be supplied more than once.
   Multiple files for the same section will be attached in the options' order.
-* **-P**, **--paste-before** _SECTION_:_FILENAME_  
-  Like **--paste-after**,
+* **-P**, **--paste-section-before** _SECTION_:_FILENAME_  
+  Like **--paste-section-after**,
   but attaches the file contents
   to the output
   just _before_ the named section is written.
+* **--paste-after** _SECTION_:_FILENAME_  
+  Like **--paste-section-after**, but does not add a section title.
+* **--paste-before** _SECTION_:_FILENAME_  
+  Like **--paste-section-before**, but does not add a section title.
 * **-c**, **--comment** [_COMMENT_]  
   Adds an invisible comment as first line.
   Without the argument, it uses this default comment:  

doc/man-to-md.1

@@ -18,7 +18,7 @@ man page files
 to Markdown README files.
 .SH OPTIONS
 .TP
-\fB\-p\fR, \fB\-\-paste\-after\fR \fISECTION\fR:\fIFILENAME\fR
+\fB\-p\fR, \fB\-\-paste\-section\-after\fR \fISECTION\fR:\fIFILENAME\fR
 Instructs the program to attach a Markdown file
 after the section named \fISECTION\fR
 has been completely written to the output.
@@ -31,12 +31,18 @@ as their top-level section title.
 This option can be supplied more than once.
 Multiple files for the same section will be attached in the options' order.
 .TP
-\fB\-P\fR, \fB\-\-paste\-before\fR \fISECTION\fR:\fIFILENAME\fR
-Like \fB\-\-paste\-after\fR,
+\fB\-P\fR, \fB\-\-paste\-section\-before\fR \fISECTION\fR:\fIFILENAME\fR
+Like \fB\-\-paste\-section\-after\fR,
 but attaches the file contents
 to the output
 just \fIbefore\fR the named section is written.
 .TP
+\fB\-\-paste-after\fR \fISECTION\fR:\fIFILENAME\fR
+Like \fB\-\-paste\-section\-after\fR, but does not add a section title.
+.TP
+\fB\-\-paste-before\fR \fISECTION\fR:\fIFILENAME\fR
+Like \fB\-\-paste\-section\-before\fR, but does not add a section title.
+.TP
 \fB\-c\fR, \fB\-\-comment\fR [\fICOMMENT\fR]
 Adds an invisible comment as first line.
 Without the argument, it uses this default comment: