chore: modify READMEs now that we have the submodules

Author: Zuhaitz Méndez Fernández de Aránguiz

README.md

@@ -115,6 +115,7 @@ Check out these projects built with Zen C:
 ```bash
 git clone https://github.com/z-libs/Zen-C.git
 cd Zen-C
+git submodule update --init --recursive
 make clean # remove old build files
 make
 sudo make install

translations/README_ES.md

@@ -115,6 +115,7 @@ Echa un vistazo a estos proyectos construidos con Zen C:
 ```bash
 git clone https://github.com/z-libs/Zen-C.git
 cd Zen-C
+git submodule update --init --recursive
 make clean # eliminar archivos de construcción antiguos
 make
 sudo make install

translations/README_IT.md

@@ -116,6 +116,7 @@ Dai un'occhiata a questi progetti creati con Zen C:
 ```bash
 git clone https://github.com/z-libs/Zen-C.git
 cd Zen-C
+git submodule update --init --recursive
 make clean # rimuove i vecchi file di build
 make
 sudo make install

translations/README_PT_BR.md

@@ -115,6 +115,7 @@ Confira estes projetos construídos com Zen C:
 ```bash
 git clone https://github.com/z-libs/Zen-C.git
 cd Zen-C
+git submodule update --init --recursive
 make clean # remove arquivos de build antigos
 make
 sudo make install

translations/README_RU.md

@@ -112,6 +112,7 @@
 ```bash
 git clone https://github.com/z-libs/Zen-C.git
 cd Zen-C
+git submodule update --init --recursive
 make clean # удалить старые файлы сборки
 make
 sudo make install

translations/README_ZH_CN.md

@@ -115,6 +115,7 @@
 ```bash
 git clone https://github.com/z-libs/Zen-C.git
 cd Zen-C
+git submodule update --init --recursive
 make clean # 移除旧的构建文件
 make
 sudo make install

translations/README_ZH_TW.md

@@ -115,6 +115,7 @@
 ```bash
 git clone https://github.com/z-libs/Zen-C.git
 cd Zen-C
+git submodule update --init --recursive
 make clean # 移除舊的構建文件
 make
 sudo make install