docs: fix reference to count of system packages (#24821)

015e29efe1 that introduced this section to the
documentation said “two” here instead of the actual count, three.
9f54cea5c5 then added a fourth, BLAS/LAPACK.
Rather than trying to keep this leading count in sync, this change just replaces
the wording with something more generic/stable.
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Matthew Fernandez 2021-07-11 11:49:19 -07:00 committed by GitHub
parent e0017a6666
commit 112c1751d7
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@ -777,7 +777,7 @@ an OpenMPI installed in /opt/local, one would use:
buildable: False
In general, Spack is easier to use and more reliable if it builds all of
its own dependencies. However, there are two packages for which one
its own dependencies. However, there are several packages for which one
commonly needs to use system versions:
^^^