Replace use of short_title with linkTitle in page front matter (#821)

Author: chalin

content/en/docs/languages/_index.md

@@ -1,6 +1,6 @@
 ---
 title: Supported languages
-short_title: Languages
+linkTitle: Languages
 weight: 2
 nav_children: section
 notoc: true

content/en/docs/languages/cpp/alts.md

@@ -1,6 +1,6 @@
 ---
 title: ALTS authentication
-short_title: ALTS
+linkTitle: ALTS
 description: >
   An overview of gRPC authentication in C++ using Application Layer Transport
   Security (ALTS).

content/en/docs/languages/cpp/api.md

@@ -1,6 +1,6 @@
 ---
 title: API reference
-short_title: API
+linkTitle: API
 weight: 90
 # Note: this is a placeholder page. The URL to this page redirects elsewhere.
 ---

content/en/docs/languages/cpp/async.md

@@ -1,6 +1,6 @@
 ---
 title: Asynchronous-API tutorial
-short_title: Async-API tutorial
+linkTitle: Async-API tutorial
 weight: 60
 spelling: cSpell:ignore classgrpc Impl's
 ---

content/en/docs/languages/csharp/api.md

@@ -1,6 +1,6 @@
 ---
 title: API reference
-short_title: API
+linkTitle: API
 weight: 90
 # Note: this is a placeholder page. The URL to this page redirects elsewhere.
 ---

content/en/docs/languages/dart/api.md

@@ -1,6 +1,6 @@
 ---
 title: API reference
-short_title: API
+linkTitle: API
 weight: 90
 # Note: this is a placeholder page. The URL to this page redirects elsewhere.
 ---

content/en/docs/languages/go/alts.md

@@ -1,6 +1,6 @@
 ---
 title: ALTS authentication
-short_title: ALTS
+linkTitle: ALTS
 description: >
   An overview of gRPC authentication in Go using Application Layer Transport
   Security (ALTS).

content/en/docs/languages/go/api.md

@@ -1,6 +1,6 @@
 ---
 title: API reference
-short_title: API
+linkTitle: API
 weight: 90
 # Note: this is a placeholder page. The URL to this page redirects elsewhere.
 ---

content/en/docs/languages/go/generated-code.md

@@ -1,6 +1,6 @@
 ---
 title: Generated-code reference
-short_title: Generated code
+linkTitle: Generated code
 weight: 95
 ---
 

content/en/docs/languages/java/alts.md

@@ -1,6 +1,6 @@
 ---
 title: ALTS authentication
-short_title: ALTS
+linkTitle: ALTS
 description: >
   An overview of gRPC authentication in Java using Application Layer Transport
   Security (ALTS).