Minor fixes

docs/source/examples/8_hessian_uq.ipynb

@@ -381,7 +381,7 @@
    "source": [
     "We now use SLEPc, seeking the 20 eigenpairs whose eigenvalues have largest magnitude.\n",
     "\n",
-    "Note: There is a notational clash here! Conventially the prior inverse covariance is denoted $B^{-1}$, but here we use this on the right-hand-side of a generalized eigenproblem, where the associated matrix is *also* conventially notated $B$. Here the `B_action` argument to the `Eigensolver` constructor is set equal to `B_inv_action` in the call, and the `B_inv_action` argument is set equal to `B_action`!"
+    "Note: There is a notational clash here! Conventially the prior inverse covariance is denoted $B^{-1}$, but here we use this on the right-hand-side of a generalized eigenproblem, where the associated matrix is *also* conventially notated $B$. Here the `B_action` argument to the `HessianEigensolver` constructor is set equal to `B_inv_action` in the call, and the `B_inv_action` argument is set equal to `B_action`!"
    ]
   },
   {
@@ -509,7 +509,7 @@
    "id": "bfc702c5-b84f-46db-9e7a-3a23856c0e47",
    "metadata": {},
    "source": [
-    "i.e. we estimate that the observation has reduced the uncertainty in our estimate for the mean of $q_u( m )$ by about 25%.\n",
+    "i.e. we estimate that the observation has reduced the uncertainty in our estimate for $q_u( m )$ by about 25%.\n",
     "\n",
     "## Computing uncertainty estimates: Full Hessian inverse\n",
     "\n",