Spell categories in title case (#9941)

For consistency, and gets rid of "Binary Sensor"/"Binary sensor"
duplicate listing entry.

source/_components/config.markdown

@@ -3,7 +3,7 @@ title: "Config"
 description: "Instructions on how to setup the configuration panel for Home Assistant."
 logo: home-assistant.png
 ha_category:
-  - Front end
+  - Front End
 ha_release: 0.39
 ha_qa_scale: internal
 ---

source/_components/ecoal_boiler.markdown

@@ -2,7 +2,7 @@
 title: "eCoal water boiler controller"
 description: "Instructions on how to integrate eSterownik.pl eCoal.pl controller into Home Assistant."
 ha_category:
-  - Water heater
+  - Water Heater
 ha_release: 0.87
 ha_iot_class: Local Polling
 redirect_from:

source/_components/econet.markdown

@@ -3,7 +3,7 @@ title: "EcoNet water heater"
 description: "Instructions on how to integrate Rheem EcoNet water heaters into Home Assistant."
 logo: econet.png
 ha_category:
-  - Water heater
+  - Water Heater
 ha_release: 0.61
 ha_iot_class: Cloud Polling
 redirect_from:

source/_components/geniushub.markdown

@@ -4,9 +4,9 @@ description: "Instructions on how to integrate Genius Hub with Home Assistant."
 logo: geniushub.png
 ha_category:
   - Climate
-  - Water heater
+  - Water Heater
   - Sensor
-  - Binary sensor
+  - Binary Sensor
 ha_release: 0.92
 ha_iot_class: Local Polling
 ---

source/_components/incomfort.markdown

@@ -3,10 +3,10 @@ title: "Intergas InComfort"
 description: "Instructions on how to integrate an Intergas Lan2RF gateway with Home Assistant."
 logo: incomfort.png
 ha_category:
-  - Water heater
+  - Water Heater
   - Climate
   - Sensor
-  - Binary sensor
+  - Binary Sensor
 ha_release: 0.93
 ha_iot_class: Local Polling
 ---

source/_components/panel_custom.markdown

@@ -3,7 +3,7 @@ title: "Panel Custom"
 description: "Instructions on how to add customized panels to the frontend of Home Assistant."
 logo: home-assistant.png
 ha_category:
-  - Front end
+  - Front End
 ha_release: 0.26
 ha_qa_scale: internal
 ---

source/_components/panel_iframe.markdown

@@ -3,7 +3,7 @@ title: "Panel iFrame"
 description: "Instructions on how to add iFrames in the frontend of Home Assistant."
 logo: home-assistant.png
 ha_category:
-  - Front end
+  - Front End
 ha_release: 0.25
 ha_qa_scale: internal
 ---

source/_components/rss_feed_template.markdown

@@ -3,7 +3,7 @@ title: "RSS feed template"
 description: "Use this integration to generate RSS feeds showing your latest data."
 logo: home-assistant.png
 ha_category:
-  - Front end
+  - Front End
 ha_release: 0.44
 ha_qa_scale: internal
 ---

source/_components/weblink.markdown

@@ -3,7 +3,7 @@ title: "Weblink"
 description: "Instructions on how to setup Links within Home Assistant."
 logo: home-assistant.png
 ha_category:
-  - Front end
+  - Front End
 ha_release: 0.13
 ha_qa_scale: internal
 ---

source/_components/wink.markdown

@@ -14,7 +14,7 @@ ha_category:
   - Scene
   - Sensor
   - Switch
-  - Water heater
+  - Water Heater
 featured: true
 ha_iot_class: Cloud Polling
 ha_release: pre 0.7