docs: fix typo

          android:<a href="#proc">process</a>="<i>string</i>"

          android:<a href="#screen">screenOrientation</a>=["unspecified" | "user" | "behind" |

                                     "landscape" | "portrait" |

                                     "sensor" | "nonsensor"]

                                     "sensor" | "nosensor"]

          android:<a href="#state">stateNotNeeded</a>=["true" | "false"]

          android:<a href="#aff">taskAffinity</a>="<i>string</i>"

          android:<a href="#theme">theme</a>="<i>resource or theme</i>"