Fix spacing in target.*.profiler docs

Co-authored-by: Joe ST <[email protected]>

config.example.toml

@@ -762,7 +762,7 @@ changelog-seen = 2
 # This option will override the same option under [build] section.
 #sanitizers = build.sanitizers (bool)
 
-# When true, build the profiler runtime for this target(required when compiling
+# When true, build the profiler runtime for this target (required when compiling
 # with options that depend on this runtime, such as `-C profile-generate` or
 # `-C instrument-coverage`). This may also be given a path to an existing build
 # of the profiling runtime library from LLVM's compiler-rt.