Remove double // in some installation paths (#5111) (#5129) (#5254)

Signed-off-by: eduponz <eduardoponz@eprosima.com>
(cherry picked from commit 8c477dc)

# Conflicts:
#	CMakeLists.txt

Co-authored-by: Eduardo Ponz Segrelles <eduardoponz@eprosima.com>
(cherry picked from commit 28a2729)

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

CMakeLists.txt

@@ -568,7 +568,7 @@ option(INSTALL_EXAMPLES "Install example" OFF)
 if(INSTALL_EXAMPLES)
   # Install examples
   install(DIRECTORY ${PROJECT_SOURCE_DIR}/examples/cpp
-      DESTINATION examples/
+      DESTINATION examples
       COMPONENT examples
       PATTERN "examples/CMakeLists.txt" EXCLUDE
       )
@@ -579,7 +579,7 @@ option(INSTALL_TOOLS "Install tools" OFF)
 if(INSTALL_TOOLS)
   # Install tools
   install(DIRECTORY ${PROJECT_SOURCE_DIR}/tools
-      DESTINATION tools/
+      DESTINATION tools
       COMPONENT tools
       PATTERN "tools/CMakeLists.txt" EXCLUDE
       )