[Sphinx] Fix mesh manual bugs.

doc/models/Makefile

@@ -38,7 +38,7 @@ SOURCES = \
 	$(SRC)/energy/doc/energy.rst \
 	$(SRC)/fd-net-device/doc/fd-net-device.rst \
 	$(SRC)/tap-bridge/doc/tap.rst \
-	$(SRC)/mesh/doc/mesh.rst \
+	$(SRC)/mesh/doc/source/mesh.rst \
 	$(SRC)/lte/doc/source/lte.rst \
 	$(SRC)/lte/doc/source/lte-user.rst \
 	$(SRC)/lte/doc/source/lte-design.rst \

src/mesh/doc/source/mesh.rst

@@ -7,4 +7,3 @@ Wi-Fi Mesh Module Documentation
     mesh-user
     mesh-testing
     mesh-references
-~