Update startrails.html: minor improvements

Fixes #3169
* In Point Release 4 ~/allsky/scripts is in the path so update the command lines.
* Fix misspelled class.
* Fix incorrect .jpg file name.

html/documentation/explanations/startrails.html

@@ -62,7 +62,8 @@ <h2><code>startrails</code> program</h2>
 
 Example when running the program manually:
 <pre>
-./startrails -d ./images/20180223/ -e jpg -b 0.15 -o ./images/20180223/startrails/startrails.jpg
+cd ~/allsky
+bin/startrails -d images/20240223/ -e jpg -b 0.15 -o images/20240223/startrails/startrails-20240223.jpg
 </pre>
 
 <br><p>
@@ -72,10 +73,11 @@ <h2><code>startrails</code> program</h2>
 
 <blockquote>
 <b>Tip</b>: If you set the
-<span class="WEBUISetting">Image Width</span>
+<span class="WebUISetting">Image Width</span>
 and
-<span class="WEBUISetting">Image Height</span>
-of your camera in the WebUI <b>Camera Settings</b> page to the actual values of your camera,
+<span class="WebUISetting">Image Height</span>
+of your camera in the WebUI <span class="WebUIWebPage">Allsky Settings</span>
+page to the actual values of your camera,
 startrails generation will skip any file that's not the correct size.
 This will eliminate any garbage images that happen to be generated.
 </blockquote>
@@ -108,23 +110,21 @@ <h2>Troubleshooting</h2>
 	<span class="fileName">allsky/images/test</span> (select with mouse,
 	then drag to the <span class="fileName">test</span> directory).
 	<b>nighttime</b> includes any file you want in the startrails image.
-<li><span class="fileName">cd ~/allsky/scripts</span>
-<li>Run s(tartrails) on the <span class="fileName">test</span> directory,
-	which contains only nighttime images: <code>./generateForDay.sh -s test</code>.
+<li>Create a startrails file in the <span class="fileName">test</span> directory
+	which contains only nighttime images: <code>generateForDay.sh --startrails test</code>.
 <li>It should say <b>No images below...</b>.
 <li>Look at the "Minimum..." line.
 	Set the <span class="shSetting">BRIGHTNESS_THRESHOLD</span>
 	to the maximum, or slightly below it.
-<li><code>./generateForDay.sh -s test &nbsp; &nbsp; # this should give pretty good results</code>
+<li><code>generateForDay.sh --startrails test &nbsp; &nbsp; # this should give pretty good results</code>
 <li>Adjust <span class="shSetting">BRIGHTNESS_THRESHOLD</span>
 	and re-run <code>generateForDay.sh</code> as needed.
-<li>When done, in the "File Manager",
-	move all the images in <span class="fileName">allsky/images/test</span>
+<li>When done move all the images in <span class="fileName">allsky/images/test</span>
 	back to <span class="fileName">allsky/images/DATE</span>.
 <li><code>rm -fr ~/allsky/images/test &nbsp; &nbsp; # remove the temporary directory</code>
 <li>Now, create the final startrails:
 	<ul>
-	<li><code>./generateForDay.sh -s DATE</code>
+	<li><code>generateForDay.sh --startrails DATE</code>
 	<li>If you want to upload the <span class="fileName">startrails.jpg</span>
 		file you just created, see the note generated by <code>generateForDay.sh</code>.
 	</ul>