Update README.md

Fix link to Maintainers profile

Author: sokolby

README.md

@@ -53,28 +53,28 @@ Laradock exists thanks to all the people who contribute.
             <br>
             <strong>Bo-Yi Wu</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@appleboy</a>
+            <a href="https://github.com/appleboy">@appleboy</a>
         </td>
         <td align="center" valign="top">
             <img width="125" height="125" src="https://github.com/philtrep.png?s=150">
             <br>
             <strong>Philippe Trépanier</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@philtrep</a>
+            <a href="https://github.com/philtrep">@philtrep</a>
         </td>
         <td align="center" valign="top">
             <img width="125" height="125" src="https://github.com/mikeerickson.png?s=150">
             <br>
             <strong>Mike Erickson</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@mikeerickson</a>
+            <a href="https://github.com/mikeerickson">@mikeerickson</a>
         </td>
         <td align="center" valign="top">
             <img width="125" height="125" src="https://github.com/zeroc0d3.png?s=150">
             <br>
             <strong>Dwi Fahni Denni</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@zeroc0d3</a>
+            <a href="https://github.com/zeroc0d3">@zeroc0d3</a>
         </td>
      </tr>
      <tr>
@@ -83,35 +83,35 @@ Laradock exists thanks to all the people who contribute.
             <br>
             <strong>Thor Erik</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@thorerik</a>
+            <a href="https://github.com/thorerik">@thorerik</a>
         </td>
         <td align="center" valign="top">
             <img width="125" height="125" src="https://github.com/winfried-van-loon.png?s=150">
             <br>
             <strong>Winfried van Loon</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@winfried-van-loon</a>
+            <a href="https://github.com/winfried-van-loon">@winfried-van-loon</a>
         </td>
         <td align="center" valign="top">
             <img width="125" height="125" src="https://github.com/sixlive.png?s=150">
             <br>
             <strong>TJ Miller</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@sixlive</a>
+            <a href="https://github.com/sixlive">@sixlive</a>
         </td>
         <td align="center" valign="top">
             <img width="125" height="125" src="https://github.com/bestlong.png?s=150">
             <br>
             <strong>Yu-Lung Shao (Allen)</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@bestlong</a>
+            <a href="https://github.com/bestlong">@bestlong</a>
         </td>
         <td align="center" valign="top">
             <img width="125" height="125" src="https://github.com/urukalo.png?s=150">
             <br>
             <strong>Milan Urukalo</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@urukalo</a>
+            <a href="https://github.com/urukalo">@urukalo</a>
         </td>
      </tr>
      <tr>
@@ -120,28 +120,28 @@ Laradock exists thanks to all the people who contribute.
             <br>
             <strong>Vince Chu</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@vwchu</a>
+            <a href="https://github.com/vwchu">@vwchu</a>
         </td>
         <td align="center" valign="top">
             <img width="125" height="125" src="https://github.com/zuohuadong.png?s=150">
             <br>
             <strong>Huadong Zuo</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@zuohuadong</a>
+            <a href="https://github.com/zuohuadong">@zuohuadong</a>
         </td>
         <td align="center" valign="top">
             <img width="125" height="125" src="https://github.com/lanphan.png?s=150">
             <br>
             <strong>Lan Phan</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@lanphan</a>
+            <a href="https://github.com/lanphan">@lanphan</a>
         </td>
         <td align="center" valign="top">
             <img width="125" height="125" src="https://github.com/ahkui.png?s=150">
             <br>
             <strong>Ahkui</strong>
             <br>
-            <a href="https://github.com/Mahmoudz">@ahkui</a>
+            <a href="https://github.com/ahkui">@ahkui</a>
         </td>
         <td align="center" valign="top">
             <img width="125" height="125" src="https://raw.githubusercontent.com/laradock/laradock/master/.github/home-page-images/join-us.png">