docs: Fix project-wide diagnostic command in `configuring-languages.md` (#45905)

Haojian Wu and Finn Evers created 

Release Notes:

- N/A

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Co-authored-by: Finn Evers <finn.evers@outlook.de>

Change summary

docs/src/configuring-languages.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Detailed changes

docs/src/configuring-languages.md 🔗 

@@ -462,4 +462,4 @@ Zed provides intelligent code completion suggestions as you type. You can manual
 
 ### Diagnostics
 
-Language servers provide real-time diagnostics (errors, warnings, hints) as you code. View all diagnostics for your project using the `diagnostics: Toggle` command.
+Language servers provide real-time diagnostics (errors, warnings, hints) as you code. View all diagnostics for your project using the {#action diagnostics::Deploy} command.