Address vale warnings and errors

These weren't introduced by this PR - I think they were missed in recent
ones.

Signed-off-by: Nic Cope <nicc@rk0n.org>

content/master/composition/compositions.md

@@ -784,15 +784,15 @@ Function response caching is an alpha feature. Enable it by setting the
 
 Crossplane can cache function responses to improve performance by reducing 
 repeated function calls. When enabled, Crossplane caches responses from 
-composition functions that include a Time-To-Live (TTL) value.
+composition functions that include a time to live (TTL) value.
 
 The cache works by:
 - Storing function responses on disk based on a hash of the request
-- Only caching responses with a non-zero TTL
+- Only caching responses with a nonzero TTL
 - Automatically removing expired cache entries
 - Reusing cached responses for identical requests until they expire
 
-This feature is particularly useful for functions that:
+This feature helps functions that:
 - Perform expensive computations or external API calls
 - Return stable results for the same inputs
 - Include appropriate TTL values in their responses
@@ -803,6 +803,6 @@ Control the cache behavior with these Crossplane pod arguments:
 
 - `--xfn-cache-max-ttl` - Maximum cache duration (default: 24 hours)
 
-The cache stores files in the `/cache/xfn/` directory within the Crossplane pod.
+The cache stores files in the `/cache/xfn/` directory in the Crossplane pod.
 For better performance, consider using an in-memory cache by mounting an 
 emptyDir volume with `medium: Memory`.

content/master/guides/pods.md

@@ -137,7 +137,7 @@ Kubernetes API server when a composed resource changes. For example, when
 a provider sets the `Ready` condition to `true`.
 
 {{<hint "important" >}}
-Real time compositions are a beta feature. Beta features are enabled by
+Real time compositions are a beta feature. Crossplane enables beta features by
 default. 
 {{< /hint >}}
 

content/master/operations/operation.md

@@ -304,17 +304,17 @@ Function response caching is an alpha feature. Enable it by setting the
 `--enable-function-response-cache` feature flag.
 {{< /hint >}}
 
-Operations can benefit from function response caching to improve performance,
+Operations can use function response caching to improve performance
-especially for operations that:
+for operations that:
-- Call the same functions repeatedly with identical inputs
+- Call the same functions often with identical inputs
 - Use functions that perform expensive computations or external API calls
 - Run frequently through CronOperation or WatchOperation
 
 The cache works the same way as for Compositions - function responses with
-time to live values are cached and reused for identical requests until
+time to live values cache and reuse identical requests until
 they expire.
 
-This is particularly useful for Operations that:
+Function response caching helps Operations that:
 - Validate configurations using expensive checks
 - Query external systems for status information
 - Perform complex calculations that don't change frequently

utils/vale/styles/Crossplane/allowed-jargon.txt

@@ -108,6 +108,7 @@ syscall
 templated
 TLS
 tolerations
+TTL
 UI
 VM
 walkthrough