docs: remove MD from secret description

{{cookiecutter.project_slug}}/kicker.json

@@ -155,7 +155,7 @@
         },
         {
           "name": "{{cookiecutter.template_PREFIX}}_REVIEW_API_TOKEN",
-          "description": "API token for `review` env _(only define if different from default)_",
+          "description": "API token for `review` env (only define if different from default)",
           "secret": true
         }
       ]
@@ -189,7 +189,7 @@
         },
         {
           "name": "{{cookiecutter.template_PREFIX}}_INTEG_API_TOKEN",
-          "description": "API token for `integration` env _(only define if different from default)_",
+          "description": "API token for `integration` env (only define if different from default)",
           "secret": true
         }
       ]
@@ -223,7 +223,7 @@
         },
         {
           "name": "{{cookiecutter.template_PREFIX}}_STAGING_API_TOKEN",
-          "description": "API token for `staging` env _(only define if different from default)_",
+          "description": "API token for `staging` env (only define if different from default)",
           "secret": true
         }
       ]
@@ -264,7 +264,7 @@
         },
         {
           "name": "{{cookiecutter.template_PREFIX}}_PROD_API_TOKEN",
-          "description": "API token for `production` env _(only define if different from default)_",
+          "description": "API token for `production` env (only define if different from default)",
           "secret": true
         }
       ]