In the past Tesseract library was wrongly named as "liblibtesseract" so it was needed to use "-llibtesseract" as argument for linker. The name was fixed in commit 52cac3a42e but the ${Tesseract_LIBRARIES} variable still wrongly holds "libtesseract" and causes linker error when one is using it in target_link_libraries(...). This commit fixes that.