sagemathgh-37213: fix a wrong reference in installation manual

In the second paragraph of
"https://doc.sagemath.org/html/en/installation/launching.html", the
reader is "strongly advised to create shortcuts for Sage as indicated at
the end of the “Linux” Section in [Install from Pre-Built
Binaries](https://doc.sagemath.org/html/en/installation/binary.html#sec-
installation-from-binaries)". However, the indicated part in the
reference "[Install from Pre-Built
Binaries](https://doc.sagemath.org/html/en/installation/binary.html#sec-
installation-from-binaries)" does not exist anymore, and should be
replaced by "[Installation steps](https://deploy-preview-37213--
sagemath.netlify.app/html/en/installation/source#build-from-source-step-
by-step)".

### 📝 Checklist

- [x] The title is concise, informative, and self-explanatory.
- [x] The description explains in detail what this PR is about.
- [ ] I have linked a relevant issue or discussion.
- [ ] I have created tests covering the changes.
- [ ] I have updated the documentation accordingly.

### ⌛ Dependencies

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URL: sagemath#37213
Reported by: 6mingkun
Reviewer(s): Frédéric Chapoton

build/pkgs/configure/checksums.ini

@@ -1,4 +1,4 @@
 tarball=configure-VERSION.tar.gz
-sha1=8124eeddb2d440bd40f9656a8f69ce53175a4706
-md5=db7e8fb79c8cd9a69e8cc6865e43add9
-cksum=719116257
+sha1=2eeabb32c883a984bfdcc9e297c1409a8892b196
+md5=949acf25b74cc4b3dddf7894de0cac27
+cksum=833852017

build/pkgs/configure/package-version.txt

@@ -1 +1 @@
-0c16f847a4db786d105c48e79bf3bc3fe07d82fc
+b1270c708455b9c0535620d94547d44b7ba20957

src/doc/en/installation/launching.rst

@@ -9,9 +9,9 @@ Notebook from the command line.
 
 If you did install the Windows version or the macOS application you
 should have icons available on your desktops or launching menus. Otherwise
-you are strongly advised to create shortcuts for Sage as indicated at the end
-of the "Linux" Section in :ref:`sec-installation-from-binaries`. Assuming
-that you have this shortcut, running
+you are strongly advised to create shortcuts for Sage as indicated in the part
+6 of the "Installation steps" Section in :ref:`build-from-source-step-by-step`.
+Assuming that you have this shortcut, running
 
 .. CODE-BLOCK:: bash