docs: fix typos in readme

Author: aekasitt

README.md

@@ -229,7 +229,7 @@ pytest
 
 * **0.3.2** Add `token_location` config (either `body` or `header`); Unset to prevent token reuse
 
-  :constuction: **BREAKING CHANGE**
+  :construction: **BREAKING CHANGE**
   0.3.1 -> 0.3.2: `generate_csrf` marked for deprecation; `validate_csrf` is now async
 
 * **0.3.5** Introduced Pydantic V2 related bug fixed in version 0.3.6; Affects `cookie_samesite`
@@ -240,7 +240,7 @@ pytest
 * **1.0.3** Failed experiement to integrate `mypyc` compilation due to dependency injection pattern
 * **1.0.4** Added flexible mode when `token_location` is omitted and multiple location checks
 
-  :constuction: **FAILED ROLLOUT**
+  :construction: **FAILED ROLLOUT**
   1.0.3 -> 1.0.4: Accidentally rolled out with unrelated code; immediately deleted version from PyPI
 
 * **1.0.5** Remove `@dataclass` leftover from failed experiment; Clarify failure reasons under tests