coccinelle: misc: update uninitialized_var.cocci documentation

Remove the documentation link from the warning message because commit
3942ea7a ("deprecated.rst: Remove now removed uninitialized_var")
removed the section from documentation. Update the rule documentation
accordingly.
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Julia Lawall <julia.lawall@inria.fr>

scripts/coccinelle/misc/uninitialized_var.cocci

 // SPDX-License-Identifier: GPL-2.0-only
 ///
 /// Please, don't reintroduce uninitialized_var().
-/// From Documentation/process/deprecated.rst:
+///
+/// From Documentation/process/deprecated.rst,
+/// commit 4b19bec97c88 ("docs: deprecated.rst: Add uninitialized_var()"):
 ///  For any compiler warnings about uninitialized variables, just add
 ///  an initializer. Using warning-silencing tricks is dangerous as it
 ///  papers over real bugs (or can in the future), and suppresses unrelated
@@ -11,6 +13,11 @@
 ///  obviously redundant, the compiler's dead-store elimination pass will make
 ///  sure there are no needless variable writes.
 ///
+/// Later, commit 3942ea7a10c9 ("deprecated.rst: Remove now removed
+/// uninitialized_var") removed this section because all initializations of
+/// this kind were cleaned-up from the kernel. This cocci rule checks that
+/// the macro is not explicitly or implicitly reintroduced.
+///
 // Confidence: High
 // Copyright: (C) 2020 Denis Efremov ISPRAS
 // Options: --no-includes --include-headers
@@ -40,12 +47,10 @@ position p;
 p << r.p;
 @@
 
-coccilib.report.print_report(p[0],
-  "WARNING this kind of initialization is deprecated (https://www.kernel.org/doc/html/latest/process/deprecated.html#uninitialized-var)")
+coccilib.report.print_report(p[0], "WARNING this kind of initialization is deprecated")
 
 @script:python depends on org@
 p << r.p;
 @@
 
-coccilib.org.print_todo(p[0],
-  "WARNING this kind of initialization is deprecated (https://www.kernel.org/doc/html/latest/process/deprecated.html#uninitialized-var)")
+coccilib.org.print_todo(p[0], "WARNING this kind of initialization is deprecated")