team: add Leonard Hecker as creator of grep

Author: sylvestre

content/team.md

@@ -24,6 +24,7 @@ Everything happens in the open on [GitHub](https://github.com/uutils), and newco
       <a class="prow" href="https://github.com/dspinellis"><span class="name">Diomidis Spinellis</span><span class="desc">created uutils <code>sed</code></span><span class="st st-alpha">sed</span></a>
       <a class="prow" href="https://github.com/pierre-warnier"><span class="name">Pierre Warnier</span><span class="desc">created uutils <code>shadow</code></span><span class="st st-alpha">shadow</span></a>
       <a class="prow" href="https://github.com/kaladron"><span class="name">Jeff Bailey</span><span class="desc">created uutils <code>tar</code></span><span class="st st-alpha">tar</span></a>
+      <a class="prow" href="https://github.com/lhecker"><span class="name">Leonard Hecker</span><span class="desc">created uutils <code>grep</code></span><span class="st st-alpha">grep</span></a>
       <a class="prow" href="https://github.com/tertsdiepraam"><span class="name">Terts Diepraam</span><span class="desc">former maintainer, led uutils <code>coreutils</code></span><span class="st st-wip">alumni</span></a>
       <a class="prow" href="https://github.com/rivy"><span class="name">Roy Ivy III</span><span class="desc">former uutils <code>coreutils</code> maintainer</span><span class="st st-wip">alumni</span></a>
       <a class="prow" href="https://github.com/Arcterus"><span class="name">Alex Lyon</span><span class="desc">former uutils <code>coreutils</code> maintainer</span><span class="st st-wip">alumni</span></a>