trivial: fix urls after repo migration

Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>

contributing.txt

@@ -51,7 +51,7 @@ These are bad because they would make Meson's DSL Turing complete. The
 second feature is a Make backend.
 
 The FAQ has specific information why these two features will not be
-added to Meson: https://github.com/jpakkane/meson/wiki/FAQ
+added to Meson: https://github.com/mesonbuild/meson/wiki/FAQ
 
 Merge requests adding either of these two features will be automatically
 rejected. Please save everyone's time (especially your own) and don't start

man/meson.1

@@ -43,4 +43,4 @@ print version number
 \fB\-\-help\fR
 print command line help
 .SH SEE ALSO
-https://jpakkane.github.io/meson/
+https://mesonbuild.com/

man/mesonconf.1

@@ -22,4 +22,4 @@ To set values, just use the \-D command line argument like this.
 .B mesonconf \-Dopt1=value1 \-Dopt2=value2
 
 .SH SEE ALSO
-https://jpakkane.github.io/meson/
+https://mesonbuild.com/

man/mesongui.1

@@ -21,4 +21,4 @@ options and allows you to change them as desired. The
 gui can also be used to build and install the project.
 
 .SH SEE ALSO
-https://jpakkane.github.io/meson/
+http://mesonbuild.com/

man/mesonintrospect.1

@@ -32,4 +32,4 @@ print all unit tests
 print command line help
 
 .SH SEE ALSO
-https://jpakkane.github.io/meson/
+http://mesonbuild.com/