Revert expected error message in docs/src/index.md

Doctests as part of test suite happen only on Julia 1.10, so the
Documenter.yml is now also pinned to 1.10

Author: abhro

.github/workflows/Documenter.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
-          version: '1'
+          version: '1.10'
       - uses: julia-actions/cache@v2
       - name: Install dependencies
         shell: julia --color=yes --project=docs {0}

docs/src/index.md

@@ -67,7 +67,7 @@ julia> aos = [1+2im, 3+4im]
  3 + 4im
 
 julia> aos.re     # Vectors do not have fields, so this is an error
-ERROR: FieldError: type Array has no field `re`, available fields: `ref`, `size`
+ERROR: type Array has no field re
 [...]
 
 julia> soa = StructArray(aos)