Fix comma splices for readability across infra and smarthome articles

smarthome/airplay-audio/index.njk

@@ -25,7 +25,7 @@ speaker app.</p>
 a software mixer stage (<code>+20&nbsp;dB</code> via an ALSA softvol plugin) sits between
 shairport-sync and the hardware. The hardware mixer itself is deliberately
 left fixed at 100% / 0&nbsp;dB, and shairport-sync only ever adjusts its own
-internal software volume, this avoids the volume jumps and mixer
+internal software volume. This avoids the volume jumps and mixer
 conflicts that show up when multiple layers all try to control loudness.</p>
 
 <h2>Bathroom-specific integration</h2>

smarthome/octoprint/index.njk

@@ -39,7 +39,7 @@ that point to better reflect its now-singular focus on the printer.</p>
 
 <h2>Notable OS lesson</h2>
 <p>After moving this Pi to a newer OS release, boot configuration files
-moved to a new path, editing the old path silently does nothing, which
+moved to a new path. Editing the old path silently does nothing, which
 is an easy trap when following older notes or tutorials for the same
 hardware. The lesson: always verify that configuration changes actually
 take effect, especially after OS upgrades on embedded hardware.</p>

smarthome/tasmota-energy/index.njk

@@ -27,7 +27,7 @@ and LED matrix displays.</p>
 
 <h2>Multi-socket power strips</h2>
 <p>Several rooms use multi-outlet smart power strips (each socket
-individually switchable and metered) rather than single smart plugs, this
+individually switchable and metered) rather than single smart plugs. This
 keeps things like "washing machine + dryer" or "office desk cluster" on
 one strip while still tracking each socket's consumption separately.</p>