Fix the logic which checks for pdflatex. Currently, it complains
for both pdfdocs and latexdocs, but for the latter, all it is
needed is Sphinx.

Reported-by: Akira Yokosawa <akiyks@gmail.com>
Closes: https://lore.kernel.org/linux-doc/cover.1758881658.git.mchehab+huawei@kernel.org/T/#ma81ff2e11b8579e5edc23e4381e464081ae668b7                                      Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 tools/docs/sphinx-build-wrapper | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/docs/sphinx-build-wrapper b/tools/docs/sphinx-build-wrapper
index cce985dced00..a74998e8309a 100755
--- a/tools/docs/sphinx-build-wrapper
+++ b/tools/docs/sphinx-build-wrapper
@@ -650,7 +650,7 @@ class SphinxBuilder:
             if not sphinxbuild and target != "mandocs":
                 sys.exit(f"Error: {self.sphinxbuild} not found in PATH.\n")
 
-        if builder == "latex":
+        if target == "pdfdocs":
             if not self.pdflatex_cmd and not self.latexmk_cmd:
                 sys.exit("Error: pdflatex or latexmk required for PDF generation")
 
-- 
2.51.0