fix bad tildes in links

Author: plmrry

html/agora.html

@@ -164,7 +164,7 @@ <h5>Paper IV data structure</h5>
                   class="underline"
                   target="_blank"
                   rel="noopener"
-                  href="https://users.flatironinstitute.org/∼chayward/agora_public_release/PaperIV/ART-I/"
+                  href="https://users.flatironinstitute.org/~chayward/agora_public_release/PaperIV/ART-I/"
                   >ART-I</a
                 >
               </li>
@@ -174,7 +174,7 @@ <h5>Paper IV data structure</h5>
                   class="underline"
                   target="_blank"
                   rel="noopener"
-                  href="https://users.flatironinstitute.org/∼chayward/agora_public_release/PaperIV/ENZO/"
+                  href="https://users.flatironinstitute.org/~chayward/agora_public_release/PaperIV/ENZO/"
                   >ENZO</a
                 >
               </li>
@@ -184,7 +184,7 @@ <h5>Paper IV data structure</h5>
                   class="underline"
                   target="_blank"
                   rel="noopener"
-                  href="https://users.flatironinstitute.org/∼chayward/agora_public_release/PaperIV/RAMSES/"
+                  href="https://users.flatironinstitute.org/~chayward/agora_public_release/PaperIV/RAMSES/"
                   >RAMSES</a
                 >
               </li>
@@ -194,7 +194,7 @@ <h5>Paper IV data structure</h5>
                   class="underline"
                   target="_blank"
                   rel="noopener"
-                  href="https://users.flatironinstitute.org/∼chayward/agora_public_release/PaperIV/CHANGA/SB/output/"
+                  href="https://users.flatironinstitute.org/~chayward/agora_public_release/PaperIV/CHANGA/SB/output/"
                   >CHANGA</a
                 >
               </li>
@@ -204,7 +204,7 @@ <h5>Paper IV data structure</h5>
                   class="underline"
                   target="_blank"
                   rel="noopener"
-                  href="https://users.flatironinstitute.org/∼chayward/agora_public_release/PaperIV/CHANGA/nSB/output/"
+                  href="https://users.flatironinstitute.org/~chayward/agora_public_release/PaperIV/CHANGA/nSB/output/"
                   >CHANGA-T</a
                 >
               </li>
@@ -214,7 +214,7 @@ <h5>Paper IV data structure</h5>
                   class="underline"
                   target="_blank"
                   rel="noopener"
-                  href="https://users.flatironinstitute.org/∼chayward/agora_public_release/PaperIV/GADGET3/"
+                  href="https://users.flatironinstitute.org/~chayward/agora_public_release/PaperIV/GADGET3/"
                   >GADGET-3</a
                 >
               </li>
@@ -224,7 +224,7 @@ <h5>Paper IV data structure</h5>
                   class="underline"
                   target="_blank"
                   rel="noopener"
-                  href="https://users.flatironinstitute.org/∼chayward/agora_public_release/PaperIV/GEAR/"
+                  href="https://users.flatironinstitute.org/~chayward/agora_public_release/PaperIV/GEAR/"
                   >GEAR</a
                 >
               </li>
@@ -234,7 +234,7 @@ <h5>Paper IV data structure</h5>
                   class="underline"
                   target="_blank"
                   rel="noopener"
-                  href="https://users.flatironinstitute.org/∼chayward/agora_public_release/PaperIV/AREPO/"
+                  href="https://users.flatironinstitute.org/~chayward/agora_public_release/PaperIV/AREPO/"
                   >AREPO-T</a
                 >
               </li>
@@ -244,7 +244,7 @@ <h5>Paper IV data structure</h5>
                   class="underline"
                   target="_blank"
                   rel="noopener"
-                  href="https://users.flatironinstitute.org/∼chayward/agora_public_release/PaperIV/GIZMO/"
+                  href="https://users.flatironinstitute.org/~chayward/agora_public_release/PaperIV/GIZMO/"
                   >GIZMO</a
                 >
               </li>