tweak NEWS

Author: jarioksa

NEWS.md

@@ -33,17 +33,17 @@
 
 * `anova` and `permutest` for partial RDA, dbRDA _etc._ residualize
   constraints similarly as partial CCA has done since **vegan**
-  release 2.6-6. This may have an effect in partial models with
+  release 2.6-6. This has an effect in partial models with
   `Condition`term.
 
 * `add1` for constrained ordination no longer bases permutation tests
-  on partial model, but uses method that is consistent with
-  permutation tests in `drop1`. In `ordistep` the _P_-value of the
-  last added term is unchanged when it is considered for dropping
-  using same permutations.
+  on partial model, but uses method that is consistent with marginal
+  tests in `drop1`. In `ordistep` the _P_-value of the last added term
+  is unchanged when it is considered for dropping using same
+  permutations.
 
 * `anova.cca(..., by = "axis")` is no longer based on partial
-  ordination but is consistent with other `by` cases. This may have an
+  ordination but is consistent with other `by` cases. This has an
   effect on later non-significant axes, but does not influence the
   _P_-value of the first axis.
 
@@ -75,7 +75,7 @@
 
 * `anova` and `permutest` with arguments `by = "terms"` or `by =
   "onedf"` was wrong in partial CCA. There were no problems in normal
-  CCA without `Condition`term, other [partial] constrained ordination
+  CCA without `Condition` term, other [partial] constrained ordination
   methods or with other `by` arguments. The bug was introduces in
   **vegan** release 2.6-6.