Fixed storage inconsistency #1176 (#1294)

Author: carstenjacobsen

docs/build/smart-contracts/getting-started/storing-data.mdx

@@ -53,15 +53,12 @@ pub struct IncrementContract;
 impl IncrementContract {
     /// Increment increments an internal counter, and returns the value.
     pub fn increment(env: Env) -> u32 {
-        let mut count: u32 = env.storage().instance().get(&COUNTER).unwrap_or(0); // If no value set, assume 0.
-
-        count += 1;
-
+        let mut count: u32 = env.storage().instance().get(&COUNTER).unwrap_or(0);
         log!(&env, "count: {}", count);
 
+        count += 1;
         env.storage().instance().set(&COUNTER, &count);
-
-        env.storage().instance().extend_ttl(100, 100);
+        env.storage().instance().extend_ttl(50, 100);
 
         count
     }