Documentation: kbuild/kconfig-language: eliminate duplicated word

Drop the doubled word "the".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Masahiro Yamada <masahiroy@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: linux-kbuild@vger.kernel.org
Link: https://lore.kernel.org/r/20200707180414.10467-11-rdunlap@infradead.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/kbuild/kconfig-language.rst

@@ -681,7 +681,7 @@ translate Kconfig logic into boolean formulas and run a SAT solver on this to
 find dead code / features (always inactive), 114 dead features were found in
 Linux using this methodology [1]_ (Section 8: Threats to validity).
 
-Confirming this could prove useful as Kconfig stands as one of the the leading
+Confirming this could prove useful as Kconfig stands as one of the leading
 industrial variability modeling languages [1]_ [2]_. Its study would help
 evaluate practical uses of such languages, their use was only theoretical
 and real world requirements were not well understood. As it stands though