Documentation updates (mainly removing references to Python 3.8 and 3…

….8).

.github/workflows/python-package.yml

@@ -29,9 +29,6 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
-        # pip versions 23.x and 24.0 break editable installs in this scenario (unable to import
-        # previously installed modules such as numpy), for some reason
-        # python -m pip install --upgrade pip==22.3.1
         python -m pip install --upgrade pip
         python -m pip install flake8 astropy pytest scons
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi

docs/api_ref/descriptions_base.html

@@ -775,7 +775,7 @@ <h2>Class methods<a class="headerlink" href="#id9" title="Link to this heading">
 discarding any key-value pairs with keys not in the replacement dict.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Parameters<span class="colon">:</span></dt>
-<dd class="field-odd"><p><strong>optionDict</strong> (<em>dict</em>) – </p>
+<dd class="field-odd"><p><strong>optionDict</strong> (<em>dict</em>)</p>
 </dd>
 </dl>
 </dd></dl>
@@ -786,7 +786,7 @@ <h2>Class methods<a class="headerlink" href="#id9" title="Link to this heading">
 already in the dict and added key-value pairs for keys not already present.</p>
 <dl class="field-list simple">
 <dt class="field-odd">Parameters<span class="colon">:</span></dt>
-<dd class="field-odd"><p><strong>optionDict</strong> (<em>dict</em>) – </p>
+<dd class="field-odd"><p><strong>optionDict</strong> (<em>dict</em>)</p>
 </dd>
 </dl>
 </dd></dl>