common/*: add alias pages for Zsh builtins (#21035)

pages/common/bye.md

@@ -0,0 +1,7 @@
+# bye
+
+> This command is an alias of `exit`.
+
+- View documentation for the original command:
+
+`tldr exit`

pages/common/chdir.md

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+# chdir
+
+> This command is an alias of `cd`.
+
+- View documentation for the original command:
+
+`tldr cd`

pages/common/getln.md

@@ -0,0 +1,7 @@
+# getln
+
+> This command is an alias of `read -zr`.
+
+- View documentation for the original command:
+
+`tldr read`

pages/common/pushln.md

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+# pushln
+
+> This command is an alias of `print -nz`.
+
+- View documentation for the original command:
+
+`tldr print`

pages/common/rehash.md

@@ -0,0 +1,7 @@
+# rehash
+
+> This command is an alias of `hash -r`.
+
+- View documentation for the original command:
+
+`tldr hash`

pages/common/unfunction.md

@@ -0,0 +1,7 @@
+# unfunction
+
+> This command is an alias of `unhash -f`.
+
+- View documentation for the original command:
+
+`tldr unhash`