doc(http_proxy): fix typo in documentation
doc(http_proxy): fix typo in documentation

laurentpetit/ccw,noncom/ccw,noncom/ccw,ccw-ide/ccw,laurentpetit/ccw,michelangelo13/ccw,michelangelo13/ccw,ccw-ide/ccw,noncom/ccw,michelangelo13/ccw,ccw-ide/ccw,laurentpetit/ccw