Update docs/heasarc/heasarc.rst
@@ -190,7 +190,7 @@ The returned table includes both the names and a short description of each
mission table.
Using alternative HEASARC servers
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+---------------------------------
It is possible to set alternative locations for HEASARC server. One such location
is hosted by `INTEGRAL Science Data Center <https://www.isdc.unige.ch/>`_, and has further,
