docs: updated links matching "linuxcnc.org/docs/(2.x|stable)" to "linuxcnc.org/docs/2.9"

Author: hansu

README.md

@@ -81,7 +81,7 @@ for such compliance.
 [Weblate]: https://hosted.weblate.org/projects/linuxcnc/
 [Website]: https://linuxcnc.org/
 
-[Ｄｏｃｕｍｅｎｔａｔｉｏｎ]: http://linuxcnc.org/docs/stable/html/
-[Ｉｎｓｔａｌｌ]: http://linuxcnc.org/docs/stable/html/getting-started/getting-linuxcnc.html
-[Ｂｕｉｌｄ]: http://linuxcnc.org/docs/stable/html/code/building-linuxcnc.html
+[Ｄｏｃｕｍｅｎｔａｔｉｏｎ]: http://linuxcnc.org/docs/2.9/html/
+[Ｉｎｓｔａｌｌ]: http://linuxcnc.org/docs/2.9/html/getting-started/getting-linuxcnc.html
+[Ｂｕｉｌｄ]: http://linuxcnc.org/docs/2.9/html/code/building-linuxcnc.html
 [License]: COPYING

debian/upstream/metadata

@@ -1,7 +1,7 @@
 ---
 Bug-Database: https://github.com/LinuxCNC/linuxcnc/issues
 Bug-Submit: https://github.com/LinuxCNC/linuxcnc/issues/new
-Documentation: http://linuxcnc.org/docs/2.8/html/
+Documentation: http://linuxcnc.org/docs/2.9/html/
 Repository-Browse: https://github.com/LinuxCNC/linuxcnc
 Reference:
  - Author: Ronald Lumia

docs/man/man1/image-to-gcode.1

@@ -33,7 +33,7 @@ image-to-gcode \- converts bitmap images to G-code
 brightness of each pixel as a Z-height. 
 
 Detailed docs:
-http://linuxcnc.org/docs/stable/html/gui/image-to-gcode.html
+http://linuxcnc.org/docs/2.9/html/gui/image-to-gcode.html
 
 .SH "SEE ALSO"
 \fBLinuxCNC(1)\fR

docs/src/man/man1/xhc-whb04b-6.1.adoc

@@ -402,7 +402,7 @@ MDI_COMMAND=(debug,macro16)
 
 Exercise caution if using copy and paste of this example code from the online web docs.
 Certain characters are incompatibly encoded by the web site (minus becomes em-dash).
-It is safer to copy and paste from https://raw.githubusercontent.com/LinuxCNC/linuxcnc/2.8/src/hal/user_comps/xhc-whb04b-6/example-configuration.md[].
+It is safer to copy and paste from https://raw.githubusercontent.com/LinuxCNC/linuxcnc/2.9/src/hal/user_comps/xhc-whb04b-6/example-configuration.md[].
 
 ----
 #

nc_files/comp311.ngc

@@ -1,6 +1,6 @@
 (this is the program describing entry moves for)
 (radius compensation in Figure 3 of the Handbook)
-(http://linuxcnc.org/docs/2.7/html/gcode/tool-compensation.html)
+(http://linuxcnc.org/docs/2.9/html/gcode/tool-compensation.html)
 
 g20 f60