docs: normalize build-manual version placeholder token

Author: WuXie

docs/variants/asrock_spc741d8/building-manual.md

@@ -29,7 +29,7 @@ then follow the steps below:
 
     ```bash
     cd coreboot
-    git checkout asrock_spc741d8_<version>
+    git checkout asrock_spc741d8_VERSION_TAG
     ```
 
     For example
@@ -45,4 +45,4 @@ then follow the steps below:
     ```
 
     The resulting coreboot image will be placed in the coreboot directory as
-    `asrock_spc741d8_<version>.rom`.
+    `asrock_spc741d8_VERSION_TAG.rom`.

docs/variants/gigabyte_mz33-ar1/building-manual.md

@@ -29,7 +29,7 @@ then follow the steps below:
 
     ```bash
     cd coreboot
-    git checkout gigabyte_mz33_ar1_<version>
+    git checkout gigabyte_mz33_ar1_VERSION_TAG
     ```
 
     For example
@@ -45,4 +45,4 @@ then follow the steps below:
     ```
 
     The resulting coreboot image will be placed in the coreboot directory as
-    `gigabyte_mz33_ar1_<version>.rom`.
+    `gigabyte_mz33_ar1_VERSION_TAG.rom`.

docs/variants/hardkernel_odroid_h4/building-manual.md

@@ -27,7 +27,7 @@ then follow the steps below:
 
     ```bash
     cd coreboot
-    git checkout hardkernel_odroid_h4_<version>
+    git checkout hardkernel_odroid_h4_VERSION_TAG
     ```
 
     For example
@@ -49,7 +49,7 @@ then follow the steps below:
     ```
 
     The resulting coreboot image will be placed in the coreboot directory as
-    `hardkernel_odroid_h4_<version>.rom`.
+    `hardkernel_odroid_h4_VERSION_TAG.rom`.
 
 ## Building Slim Bootloader
 
@@ -67,7 +67,7 @@ then follow the steps below:
     Skip this step otherwise.
 
     ```bash
-    git checkout hardkernel_odroid_h4_<version>
+    git checkout hardkernel_odroid_h4_VERSION_TAG
     ```
 
     For example

docs/variants/qemu_q35/building-manual.md

@@ -50,7 +50,7 @@ Compile:
 ```
 
 The resulting coreboot image will be placed in the current directory as
-`qemu_q35_<version>.rom`.
+`qemu_q35_VERSION_TAG.rom`.
 
 > To build a QEMU image with all features and menus enabled, invoke:
 >