[Tests] Replace all dots with backslash dots

test/fast/Unit tests/nvm_ls_current

@@ -6,7 +6,7 @@ TEST_DIR="$TEST_PWD/nvm_ls_current_tmp"
 cleanup() { rm -rf "$TEST_DIR"; unset -f return_zero; alias node='node' ; unalias node; }
 die () { echo $@ ; cleanup ; exit 1; }
 
-. ../../../nvm.sh
+\. ../../../nvm.sh
 
 return_zero () { return 0; }