manuals: fix trailing spaces

Fixing errors reported by "make sphinx-lint"

(From yocto-docs rev: 45b04c281a567e06fd2904166bcc26603e73e684)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

documentation/dev-manual/start.rst

@@ -612,10 +612,14 @@ Use the following procedure to locate the latest upstream copy of the
 Accessing Index of Releases
 ---------------------------
 
-Yocto Project maintains an Index of Releases area that contains related
-files that contribute to the Yocto Project. Rather than Git
-repositories, these files are tarballs that represent snapshots in time
-of a given component.
+The Yocto Project also provides source archives of its releases, which
+are available on :yocto_dl:`/releases/yocto/`. Then, choose the subdirectory
+containing the release you wish to use, for example
+:yocto_dl:`yocto-&DISTRO; </releases/yocto/yocto-&DISTRO;/>`.
+
+You will find there source archives of individual components (if you wish
+to use them individually), and of the corresponding Poky release bundling
+a selection of these components.
 
 .. note::
 

documentation/migration-guides/release-notes-4.0.rst

@@ -112,8 +112,7 @@ New Features / Enhancements in 4.0
 - BitBake enhancements:
 
    - Fetcher enhancements:
-   
-      - New :ref:`bitbake:bitbake-user-manual/bitbake-user-manual-fetching:crate fetcher (\`\`crate://\`\`)` for Rust packages
+      - New :ref:`bitbake-user-manual/bitbake-user-manual-fetching:crate fetcher (\`\`crate://\`\`)` for Rust packages
       - Added striplevel support to unpack
       - git: Add a warning asking users to set a branch in git urls
       - git: Allow git fetcher to support subdir param