docs: fix --deploy-git-folder description + document buildFromGit constraints and startWithoutCode

- pipeline.mdx: the --deploy-git-folder flag description was a copy of
  --zerops-yaml-path's text. Corrected to what the flag does per
  'zcli service deploy --help': uploads the .git folder with the deploy
  (ignored by default).
- import.mdx buildFromGit: document two constraints verified against the
  live platform: the repository must be publicly accessible (a private
  repo fails at clone time with a FAILED build and no build log), and
  the URL must not carry a trailing .git suffix (fails the same way).
- import.mdx: add the startWithoutCode service key (present in the live
  import JSON schema, previously undocumented): starts a runtime
  service's containers without waiting for a first deploy.

Author: krls2020

apps/docs/content/features/pipeline.mdx

@@ -405,8 +405,8 @@ Usage:
 Flags:
       --archive-file-path string   If set, zCLI creates a tar.gz archive with the application code in the required path relative
                                  to the working directory. By default, no archive is created.
-      --deploy-git-folder          Sets a custom path to the zerops.yaml file relative to the working directory. By default zCLI
-                                 looks for zerops.yaml in the working directory.
+      --deploy-git-folder          If set, the .git folder is also uploaded with the deploy. By default, the .git folder
+                                 is ignored.
   -h, --help                     the service deploy command.
       --project-id string         If you have access to more than one project, you must specify the project ID for which the
                                  command is to be executed.

apps/docs/content/references/import.mdx

@@ -401,6 +401,19 @@ This example includes all possible configuration options for Zerops services. No
       <td className="w-fit">string (URL)</td>
       <td className="w-fit">
         A URL of a Github or Gitlab repository used for a one-time build of your service.
+        The repository must be publicly accessible — a private repository fails at clone
+        time (the build ends FAILED with no build log). Use the plain repository URL
+        without a trailing `.git` suffix, which fails the same way.
+      </td>
+    </tr>
+    <tr>
+      <td className="w-fit font-semibold">startWithoutCode</td>
+      <td className="w-fit">boolean</td>
+      <td className="w-fit">
+        Default: `false`<br/>
+        Set `true` to start a runtime service's containers without waiting for a first
+        deploy. Useful for provisioning a service whose code arrives later (e.g. via
+        SSH or a later pipeline run).
       </td>
     </tr>
     <tr>