amass*: edit pages (#12504)

* amass-enum: add example

* amass-db: remove non existent subcommand

This subcommand has been moved to a separate tool called `oam-tools`

* amass: update examples

* amass-intel: update more information link

* amass-enum: update more information link

* amass-intel: add example

* amass-*: maintenance changes

* Update pages/common/amass-intel.md

Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>

* Update pages/common/amass-intel.md

Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>

* Update pages/common/amass.md

Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>

* Update pages/common/amass.md

Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>

* Update pages/common/amass-enum.md

Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>

---------

Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>

pages/common/amass.md

@@ -1,20 +1,20 @@
 # amass
 
 > In-depth Attack Surface Mapping and Asset Discovery tool.
-> Some subcommands such as `amass db` have their own usage documentation.
-> More information: <https://github.com/OWASP/Amass>.
+> Some subcommands such as `amass intel` have their own usage documentation.
+> More information: <https://github.com/owasp-amass/amass>.
 
 - Execute an Amass subcommand:
 
-`amass {{subcommand}}`
+`amass {{intel|enum}} {{options}}`
 
 - Display help:
 
 `amass -help`
 
-- Display help on an Amass subcommand (like `intel`, `enum`, etc.):
+- Display help on an Amass subcommand:
 
-`amass -help {{subcommand}}`
+`amass {{intel|enum}} -help`
 
 - Display version: