fix: correct documentation errors found during audit

- Update Rust crate version from 0.2 to 0.3 in installation.md and rust-api.md
- Fix community_detection parameter name from max_iterations to iterations in graph-analytics.md

Author: Dylan Storey

docs/src/how-to/installation.md

@@ -17,7 +17,7 @@ Add to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-graphqlite = "0.2"
+graphqlite = "0.3"
 ```
 
 ## From Source

docs/src/reference/rust-api.md

@@ -6,7 +6,7 @@ Add to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-graphqlite = "0.2"
+graphqlite = "0.3"
 ```
 
 ## Connection

docs/src/tutorials/graph-analytics.md

@@ -84,7 +84,7 @@ results = g.query("RETURN betweennessCentrality()")
 Find clusters of densely connected nodes:
 
 ```python
-results = g.community_detection(max_iterations=10)
+results = g.community_detection(iterations=10)
 communities = {}
 for r in results:
     label = r["community"]