cmake: Fix clang-format detection

Author: stotko

cmake/FindClangFormat.cmake

@@ -6,7 +6,7 @@ find_program(CLANG_FORMAT_EXECUTABLE
 
 if(CLANG_FORMAT_EXECUTABLE)
     execute_process(COMMAND "${CLANG_FORMAT_EXECUTABLE}" "--version" OUTPUT_VARIABLE CLANG_FORMAT_VERSION_TEXT)
-    string(REGEX MATCH "^clang-format version ([^\n]*)" CLANG_FORMAT_VERSION_TEXT_CUT "${CLANG_FORMAT_VERSION_TEXT}")
+    string(REGEX MATCH "clang-format version ([^\n]*)" CLANG_FORMAT_VERSION_TEXT_CUT "${CLANG_FORMAT_VERSION_TEXT}")
     set(CLANG_FORMAT_VERSION "${CMAKE_MATCH_1}")
 
     unset(CLANG_FORMAT_VERSION_TEXT_CUT)