Fix/Improve wording

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/docs/proposed/config-split.md b/docs/proposed/config-split.md
index c925de6..4ec6aec 100644
--- a/docs/proposed/config-split.md
+++ b/docs/proposed/config-split.md
@@ -1,10 +1,10 @@
 Configuration file split
 ========================
 
-## Why splitting the configuration file?
+## Why split the configuration file?
 
 The objective of the repository split is to reach the point where in Mbed TLS
-all the cryptography code and its tests are located in a tf-psa-crypto
+all the cryptography code and its tests are located in a `tf-psa-crypto`
 directory that just contains the TF-PSA-Crypto repository as a submodule.
 The cryptography APIs exposed by Mbed TLS are just the TF-PSA-Crypto ones.
 Mbed TLS relies solely on the TF-PSA-Crypto build system to build its
@@ -12,12 +12,12 @@
 
 The TF-PSA-Crypto configuration file `tf_psa_crypto_config.h` configures
 entirely the cryptography interface exposed by Mbed TLS through TF-PSA-Crypto.
-Mbed TLS configuration is splitted in two files: `mbedtls_config.h` for TLS and
+Mbed TLS configuration is split in two files: `mbedtls_config.h` for TLS and
 x509, `tf_psa_crypto_config.h` for the cryptography.
 
 ## How do we split the configuration file?
 
-We extend the so called PSA cryptographic configuration scheme based on
+We extend the so-called PSA cryptographic configuration scheme based on
 `mbedtls_config.h` and `crypto_config.h`. The configuration file `crypto_config.h`
 is extended to become the TF-PSA-Crypto configuration file, `mbedtls_config.h`
 becomes the configuration file for the TLS and x509 libraries. All the options
@@ -70,7 +70,7 @@
 yet part of the PSA cryptography API (like LMS or PK).
 
 It is followed by the "Data format support" section that contains configuration
-options of utilities related to various data formats (like base64 or ASN1 APIs).
+options of utilities related to various data formats (like Base64 or ASN.1 APIs).
 These utilities aim to facilitate the usage of the PSA cryptography API in other
 cryptography projects.