docs: Divorcing tools for the main and docs build

Change-Id: Ica15c40b54cde1cf0ae365ed80c38d2f086f6b2f
Signed-off-by: Anton Komlev <anton.komlev@arm.com>
diff --git a/docs/CMakeLists.txt b/docs/CMakeLists.txt
index f1a2b2d..b17780a 100644
--- a/docs/CMakeLists.txt
+++ b/docs/CMakeLists.txt
@@ -9,7 +9,7 @@
 
 add_custom_target(docs)
 
-list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/../cmake)
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
 
 find_package(Python3)
 find_package(Sphinx)